Laser pipe cutting machine

Abstract

The utility model discloses a laser pipe cutting machine which is applied to the technical field of pipe cutting machine equipment and is characterized in that a pipe positioning and rotating device and a laser cutting device are respectively and fixedly arranged at the tail end of a feeding device along the pipe conveying direction based on a rack; the rack is fixedly provided with a material receiving device at the bottom of the pipe positioning and rotating device, the pipe positioning and rotating device comprises a first positioning roller group and a second positioning roller group, the first positioning roller group and the second positioning roller group are fixedly arranged on the rack respectively, the distance between the first positioning roller group and the second positioning roller group is adjustable, and a rotating assembly is fixedly arranged on the laser cutting device. The pipe cutting device has the technical effects that the structure is simple, blanking of finished pipes and pipe tailings can be quickly realized, and the pipe cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutting machine equipment, in particular to a laser pipe cutting machine. Background Art

[0002] The inner liner of the thermos cup is made of stainless steel with a thickness of about 0.25-0.3mm. The inner liner of the thermos cup is cut from a tube by a laser tube cutting machine. At present, a Chinese invention with a publication number of CN116765623A discloses a laser tube cutting machine and a tube cutting method, including a frame, a feeding device, a cutting and transferring device, a pushing device for pushing the tube from the feeding device to the cutting and transferring device, and a turning device for transferring the tube are arranged on the frame, and a plurality of groups of clamping devices for positioning the tube are arranged at one end of the pushing device close to the cutting and transferring device. The clamping device includes a roller group arranged on the frame along the length direction of the tube and a rubber roller group arranged above the roller group. The tube is arranged between the rubber roller group and the roller group. The rubber roller group includes a driving member for driving the tube to rotate along a horizontal axis. The driving member fits the surface of the tube, and the vertical distance between the rubber roller group and the roller group is adjustable.

[0003] The existing invention requires a turning device to realize the unloading of the cut finished pipe after the pipe cutting is completed. The pipe unloading efficiency is low, and the remaining pipe tails after cutting cannot be quickly discharged from the cutting and transferring device, which affects the efficiency of pipe cutting and needs to be improved. Utility Model Content

[0004] The utility model aims to provide a laser pipe cutting machine, which has the advantages of simple structure, capable of quickly cutting finished pipes and pipe tails, and improving the efficiency of pipe cutting.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a laser pipe cutting machine, in which a pipe positioning and rotating device and a laser cutting device are fixedly provided on a frame along the pipe conveying direction, and the frame is fixedly provided with a receiving device for unloading finished products and tailings and for collecting finished pipes at the bottom of the pipe positioning and rotating device, and the pipe positioning and rotating device includes a first positioning roller group fixedly provided on the frame with a fixed spacing and a second positioning roller group with an adjustable spacing, and the laser cutting device is fixedly provided with a rotating component for pressing and positioning the pipe on the first positioning roller group and the second positioning roller group respectively and driving the pipe to rotate.

[0006] The utility model is further configured as follows: the laser cutting device includes a laser cutting seat fixedly connected to the frame and a laser mounting seat slidably connected to the laser cutting seat based on a first guide slide rail arranged along the vertical direction; the rotating component is arranged on the laser mounting seat and moves synchronously therewith; a lifting and adjusting cylinder is fixedly connected to the laser cutting seat along the vertical direction for driving the laser mounting seat to slide along the vertical direction; a laser cutter is slidably connected to the laser mounting seat based on a screw sliding assembly arranged along the vertical direction.

[0007] The utility model is further configured as follows: the first positioning roller group includes a group of first positioning rollers symmetrically arranged on the frame based on a first mounting frame, the second positioning roller group includes a second positioning roller arranged on the frame based on a second mounting frame and a spacing adjustment seat slidably connected to the frame along a direction perpendicular to the pipe conveying direction, the spacing adjustment seat is fixedly connected with a third positioning roller cooperating with the second positioning roller based on a third mounting frame, and the frame is fixedly connected with a spacing adjustment cylinder for driving the spacing adjustment seat to slide on the frame.

[0008] The utility model is further configured as follows: the rotating assembly includes a rotating seat fixedly connected to the laser mounting seat and a group of rotating shafts connected to the rotating seat and symmetrically rotating along an axis line parallel to the pipe conveying direction; the rotating shafts are coaxially fixedly connected with positioning drive rollers that respectively cooperate with the first positioning roller group and the second positioning roller group to achieve pipe positioning and clamping; the rotating seat is fixedly connected with a synchronous drive assembly for synchronously driving the rotating shaft to rotate synchronously in the opposite direction.

[0009] The utility model is further configured as follows: the rotating assembly includes a first driving gear coaxially fixedly connected to the rotating shaft and a second driving gear rotatably connected to the rotating seat and cooperating with the first driving gear, and the rotating seat is fixedly connected to a synchronous rotating motor for driving the second driving gear to rotate.

[0010] The utility model is further configured as follows: the material receiving device is fixedly provided with a material unloading frame for realizing the unloading of finished products and tailings under the second positioning roller group, the material unloading frame includes a finished product unloading portion and a tailings unloading trough opened on the finished product unloading portion and aligned with the gap between the first positioning roller group and the second positioning roller group, and the finished product unloading portion is fixedly provided with an inclined tailings unloading portion on the tailings unloading trough.

[0011] The utility model is further configured as follows: the material receiving device includes a horizontal adjustment slide rail fixedly connected to the frame along a direction parallel to the pipe conveying direction and a horizontal adjustment seat slidably connected to the horizontal adjustment slide rail along the horizontal direction; a finished product receiving seat is slidably connected to the horizontal adjustment seat along the vertical direction based on the vertical adjustment slide rail; a lifting and adjusting rack arranged along the vertical direction is fixedly connected to the horizontal adjustment seat; a lifting and adjusting gear cooperating with the lifting and adjusting rack is rotatably connected to the finished product receiving seat, and a material receiving motor is fixedly connected to drive the lifting and adjusting gear to rotate.

[0012] The utility model is further configured as follows: the tube positioning and rotating device and the laser cutting device are provided with at least two groups so as to realize synchronous cutting processing of multiple tubes.

[0013] The utility model is further configured as follows: a tail material pushing assembly is provided between the first positioning roller group and the second positioning roller group, the tail material pushing assembly includes a first pushing cylinder fixedly connected to the frame and a second pushing cylinder fixedly connected to the spacing adjustment seat along the vertical direction, the sliding ends of the first pushing cylinder and the second pushing cylinder are fixedly connected with pushing plates respectively attached to the second positioning roller and the third positioning roller, and the pushing plates match the shapes of the second positioning roller and the third positioning roller.

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. The pipe positioning and rotating device is provided with a first positioning roller group with a fixed spacing and a second positioning roller group with an adjustable spacing. The second positioning roller group is provided with a fixed second positioning roller on the frame and a spacing adjustment seat sliding along a direction perpendicular to the pipe conveying direction on the frame. At the same time, a third positioning roller is provided on the spacing adjustment seat. When the pipe cutting is completed, the spacing adjustment cylinder drives the spacing adjustment seat to slide so that the third positioning roller moves away from the second positioning roller, thereby increasing the spacing between the second positioning roller and the third positioning roller. The cut finished pipe falls from between the second positioning roller and the third positioning roller into the finished product unloading part of the unloading frame and is finally realized by the receiving device. The finished product is collected, and a tail material pushing assembly is provided between the first positioning roller group and the second positioning roller group. The tail material pushing assembly is provided by respectively arranging a first pushing cylinder and a second pushing cylinder on the frame and a spacing adjustment seat. When the pipe cutting is completed and the tail material needs to be discharged, the spacing adjustment cylinder drives the spacing adjustment seat to slide so as to discharge the finished pipe. At the same time, the spacing adjustment seat drives the second pushing cylinder to move away from the first pushing cylinder. At this time, the gap between the first pushing cylinder and the second pushing cylinder increases so that the tail material falls from between the two and passes through the tail material discharge chute and is finally discharged from the tail material discharge part, so that the finished pipe and the pipe tail material can be discharged quickly, thereby improving the efficiency of pipe cutting and having a simple structure.

[0016] 2. The rotating assembly is set on the laser mounting base to achieve synchronous movement of the laser cutter and the rotating assembly, thereby improving the efficiency of pipe cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0018] Figure 2 is a schematic structural diagram of the pipe positioning and rotating device of this embodiment;

[0019] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0020] Figure 4 is a schematic structural diagram of the laser cutting device and the rotating assembly of this embodiment;

[0021] Figure 5 It is a structural schematic diagram of the blanking frame of this embodiment;

[0022] Figure 6 It is a schematic structural diagram of the material collecting device of this embodiment.

[0023] Figure numerals: 1, feeding device; 2, pushing device; 3, frame; 4, pipe positioning and rotating device; 41, first positioning roller group; 42, second positioning roller group; 43, rotating assembly; 431, rotating seat; 432, rotating shaft; 433, positioning drive roller; 434, synchronous drive assembly; 435, first drive gear; 436, second drive gear; 437, synchronous rotating motor; 44, first mounting frame; 45, first positioning roller; 46, second mounting frame; 47, second positioning roller; 48, spacing adjustment seat; 49, third mounting frame; 410, third positioning roller; 411, spacing adjustment Cylinder; 5. Laser cutting device; 51. Laser cutting seat; 52. First guide slide rail; 53. Laser mounting seat; 54. Lifting adjustment cylinder; 55. Laser cutter; 56. Screw adjustment assembly; 6. Unloading frame; 61. Finished product unloading section; 62. Tailing material unloading chute; 63. Tailing material unloading section; 7. Receiving device; 71. Horizontal adjustment slide rail; 72. Horizontal adjustment seat; 73. Vertical adjustment slide rail; 74. Finished product receiving seat; 75. Lifting adjustment rack; 76. Lifting adjustment gear; 77. Receiving motor; 8. Tailing material pushing assembly; 81. First pushing cylinder; 82. Second pushing cylinder; 83. Pushing plate. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Example:

[0026] refer to Figures 1 to 6 A laser pipe cutting machine comprises a feeding device 1 and a pushing device 2 for pushing the pipe to achieve pipe cutting. A pipe positioning and rotating device 4 and a laser cutting device 5 are fixedly provided at the end of the feeding device 1 based on a frame 3 along the pipe conveying direction. The frame 3 is fixedly provided with a feeding frame 6 for achieving finished product and tail material feeding and a receiving device 7 for collecting finished product pipes at the bottom of the pipe positioning and rotating device 4. The pipe positioning and rotating device 4 comprises a first positioning roller group 41 and a second positioning roller group 42 with adjustable spacing, which are respectively fixed on the frame 3 and fixed in spacing. The first positioning roller group 41 and the second positioning roller group 42 are spaced a certain distance apart to achieve waste discharge. A rotating assembly 43 for pressing and positioning the pipe on the first positioning roller group 41 and the second positioning roller group 42 and driving the pipe to rotate is fixedly provided on the laser cutting device 5. The rotation of the pipe is achieved by the rotating assembly 43, the first positioning roller group 41 and the second positioning roller group 42. The laser cutting device 5 cuts the pipe during the rotation of the pipe. In this embodiment, at least two sets of the tube positioning and rotating device 4 and the laser cutting device 5 are provided so as to synchronously cut a plurality of tubes to improve the tube cutting efficiency.

[0027] refer to Figure 1and Figure 4 Specifically, the laser cutting device 5 includes a laser cutting seat 51 fixedly connected to the frame 3 and a laser mounting seat 53 slidably connected to the laser cutting seat 51 based on a first guide slide rail 52 arranged along the vertical direction. A lifting and adjusting cylinder 54 is fixedly connected to the laser cutting seat 51 along the vertical direction for driving the laser mounting seat 53 to slide along the vertical direction. A laser cutter 55 is slidably connected to the laser mounting seat 53 based on a screw sliding assembly 56 arranged along the vertical direction. When laser cutting is performed, the laser mounting seat 53 is quickly driven down by the lifting and adjusting cylinder 54 and the height of the laser cutter 55 is further accurately adjusted by the screw sliding assembly 56 to realize laser cutting of the pipe, thereby improving the working efficiency of the laser cutter 55.

[0028] refer to Figure 2 and Figure 3 Specifically, the first positioning roller group 41 includes a group of first positioning rollers 45 symmetrically arranged on the frame 3 based on the first mounting frame 44, and the preliminary positioning of the pipe is achieved through a group of symmetrically fixed first positioning rollers 45. The second positioning roller group 42 includes a second positioning roller 47 arranged on the frame 3 based on the second mounting frame 46 and a spacing adjustment seat 48 slidably connected to the frame 3 along a direction perpendicular to the pipe conveying direction. The spacing adjustment seat 48 is fixedly connected with a third positioning roller that cooperates with the second positioning roller 47 based on the third mounting frame 49. 410, a spacing adjustment cylinder 411 is fixedly connected to the frame 3 for driving the spacing adjustment seat 48 to slide on the frame 3. When the pipe cutting is completed, the spacing adjustment cylinder 411 drives the spacing adjustment seat 48 to slide, so that the third positioning roller 410 moves in a direction away from the second positioning roller 47, thereby increasing the distance between the second positioning roller 47 and the third positioning roller 410. The cut finished pipe falls from between the second positioning roller 47 and the third positioning roller 410 into the unloading frame 6 and finally is collected by the collecting device 7.

[0029] refer to Figure 1 and Figure 4Specifically, the rotating assembly 43 includes a rotating seat 431 fixedly connected to the laser mounting seat 53 and a set of rotating shafts 432 connected to the rotating seat 431 and symmetrically rotating along an axis line parallel to the pipe conveying direction. A positioning driving roller 433 is coaxially fixedly connected to the rotating shaft 432 and cooperates with the first positioning roller group 41 and the second positioning roller group 42 respectively to achieve pipe positioning and compaction. A synchronous driving assembly 434 is fixedly connected to the rotating seat 431 and is used to synchronously drive the rotating shaft 432 to rotate synchronously in the opposite direction. When the lifting and adjusting cylinder 54 quickly drives the laser mounting seat 53 to descend, it also drives the rotating assembly 43 to descend. The synchronous driving assembly 434 drives the rotating shaft 432 to rotate synchronously in the opposite direction, thereby driving the positioning driving roller 433 to rotate, and the friction between the pipe drives the pipe to rotate, thereby realizing laser cutting. The rotating assembly 43 includes a first driving gear 435 coaxially fixedly connected to the rotating shaft 432 and a second driving gear 436 rotatably connected to the rotating base 431 and cooperating with the first driving gear 435. A synchronous rotating motor 437 is fixedly connected to the rotating base 431 for driving the second driving gear 436 to rotate. The second driving gear 436 is driven to rotate by the synchronous rotating motor 437, thereby driving the first driving gear 435 to rotate synchronously.

[0030] refer to Figure 1 and Figure 5 Specifically, the blanking frame 6 includes a finished product blanking portion 61 and a tail material blanking trough 62 which is opened on the finished product blanking portion 61 and is aligned with the gap between the first positioning roller group 41 and the second positioning roller group 42. The finished product blanking portion 61 is fixedly provided with an inclined tail material blanking portion 63 on the tail material blanking trough 62. When the pipe cutting is completed, the spacing adjustment cylinder 411 drives the spacing adjustment seat 48 to slide so that the third positioning roller 410 moves in a direction away from the second positioning roller 47, thereby increasing the spacing between the second positioning roller 47 and the third positioning roller 410. The cut finished pipe is moved from the second positioning roller 47 to the third positioning roller 410. and the third positioning roller 410 fall into the finished product unloading part 61 of the unloading frame 6 and finally realize the finished product collection through the collecting device 7. When the pipe cutting is completed and the tailings need to be discharged, the spacing adjustment cylinder 411 drives the spacing adjustment seat 48 to slide to discharge the finished pipe. At the same time, the spacing adjustment seat 48 drives the second pushing cylinder 82 to move away from the first pushing cylinder 81. At this time, the gap between the first pushing cylinder 81 and the second pushing cylinder 82 increases, so that the tailings fall from between the two, pass through the tailing unloading trough 62, and are finally discharged from the tailing unloading part 63, so that the unloading of finished pipes and pipe tailings can be quickly realized.

[0031] refer to Figure 1 and Figure 6Specifically, the material receiving device 7 includes a horizontal adjustment slide rail 71 fixedly connected to the frame 3 along a direction parallel to the pipe conveying direction and a horizontal adjustment seat 72 slidably connected to the horizontal adjustment slide rail 71 along the horizontal direction. A finished product receiving seat 74 is slidably connected to the horizontal adjustment seat 72 along the vertical direction based on the vertical adjustment slide rail 73. A lifting and adjusting rack 75 arranged along the vertical direction is fixedly connected to the horizontal adjustment seat 72. A lifting and adjusting gear 76 cooperating with the lifting and adjusting rack 75 is rotatably connected to the finished product receiving seat 74, and a material receiving motor 77 fixedly connected to drive the lifting and adjusting gear 76 to rotate. The horizontal position of the finished product receiving seat 74 is adjusted by the horizontal adjustment slide rail 71. When receiving the material, the material receiving motor 77 drives the lifting and adjusting gear 76 to rotate. The lifting and adjusting gear 76 cooperates with the lifting and adjusting rack 75 to adjust the position of the finished product receiving seat 74 in the vertical direction, thereby completing the receiving of the finished pipe.

[0032] refer to Figure 2 and Figure 3 Specifically, a tail material pushing assembly 8 is provided between the first positioning roller group 41 and the second positioning roller group 42. The tail material pushing assembly 8 includes a first pushing cylinder 81 fixedly connected to the frame 3 and a second pushing cylinder 82 fixedly connected to the spacing adjustment seat 48 along the vertical direction. Pushing plates 83 respectively fitted with the second positioning roller 47 and the third positioning roller 410 are fixedly connected to the sliding ends of the first pushing cylinder 81 and the second pushing cylinder 82. The pushing plate 83 matches the shape of the second positioning roller 47 and the third positioning roller 410. When the tail material is collected, the first pushing cylinder 81 and the second pushing cylinder 82 drive the pushing plate 83 to rise and push the tail material pipe so that the tail material can smoothly fall into the tail material discharge trough 62 and finally be discharged from the tail material discharge part 63, so as to avoid the tail material affecting the normal cutting process of the subsequent pipe.

[0033] Brief description of the use process: the pipe is loaded from the loading device 1, and the pushing device 2 pushes the end of the pipe so that the pipe enters the pipe positioning and rotating device 4. When the pipe is output for a certain distance, the lifting and adjusting cylinder 54 drives the rotating component 43 to descend so that the positioning drive roller 433 abuts against the pipe, and the synchronous driving component 434 drives the rotating shaft 432 to rotate synchronously in the opposite direction, thereby driving the positioning drive roller 433 to rotate. At the same time, the lifting and adjusting cylinder 54 quickly drives the laser mounting seat 53 to descend and further accurately adjusts the laser cutter 55 through the screw sliding component 56, so that the laser cutter 55 is adjusted to the corresponding height to perform laser cutting on the pipe. When the pipe cutting is completed, the spacing adjustment cylinder 411 drives the spacing adjustment seat 48 to slide, so that the third positioning roller 410 moves away from the second positioning roller 47. By increasing the spacing between the second positioning roller 47 and the third positioning roller 410, the cut finished pipe falls from between the second positioning roller 47 and the third positioning roller 410 to the finished product unloading part 61 of the unloading frame 6 and finally is collected by the collecting device 7. When the pipe cutting is completed and the tail material needs to be discharged, the spacing adjustment cylinder 411 drives the spacing adjustment seat 48 to slide to discharge the finished pipe. At the same time, the spacing adjustment seat 48 drives the second pushing cylinder 82 to move away from the first pushing cylinder 81. At this time, the gap between the first pushing cylinder 81 and the second pushing cylinder 82 increases, and the first pushing cylinder 81 and the second pushing cylinder 82 drive the pushing plate 83 to rise and push the tail material pipe so that the tail material can smoothly fall into the tail material unloading trough 62 and finally be discharged from the tail material unloading part 63.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A laser tube cutting machine, characterized in that: A pipe positioning and rotating device (4) and a laser cutting device (5) are fixedly arranged on a frame (3) along the pipe conveying direction; the frame (3) is fixedly provided with a receiving device (7) at the bottom of the pipe positioning and rotating device (4) for realizing the unloading of finished products and tailings and for collecting finished pipes; the pipe positioning and rotating device (4) comprises a first positioning roller group (41) and a second positioning roller group (42) with adjustable spacing, which are respectively fixedly arranged on the frame (3); and a rotating component (43) is fixedly provided on the laser cutting device (5) for pressing and positioning the pipe on the first positioning roller group (41) and the second positioning roller group (42) and driving the pipe to rotate.

2. A laser tube cutting machine according to claim 1, characterized in that: The laser cutting device (5) comprises a laser cutting seat (51) fixedly connected to the frame (3) and a laser mounting seat (53) slidably connected to the laser cutting seat (51) based on a first guide slide rail (52) arranged along the vertical direction, the rotating assembly (43) is arranged on the laser mounting seat (53) and moves synchronously therewith, the laser cutting seat (51) is fixedly connected to a lifting and adjusting cylinder (54) in the vertical direction for driving the laser mounting seat (53) to slide in the vertical direction, and the laser mounting seat (53) is slidably connected to a laser cutter (55) based on a screw sliding assembly (56) arranged in the vertical direction.

3. A laser tube cutting machine according to claim 2, characterized in that: The first positioning roller group (41) comprises a group of first positioning rollers (45) symmetrically arranged on the frame (3) based on a first mounting frame (44); the second positioning roller group (42) comprises a second positioning roller (47) arranged on the frame (3) based on a second mounting frame (46) and a spacing adjustment seat (48) slidably connected to the frame (3) along a direction perpendicular to the pipe conveying direction; a third positioning roller (410) cooperating with the second positioning roller (47) is fixedly connected to the spacing adjustment seat (48) based on a third mounting frame (49); and a spacing adjustment cylinder (411) for driving the spacing adjustment seat (48) to slide on the frame (3) is fixedly connected to the frame (3).

4. A laser tube cutting machine according to claim 3, characterized in that: The rotating assembly (43) includes a rotating seat (431) fixedly connected to the laser mounting seat (53) and a set of rotating shafts (432) connected to the rotating seat (431) and symmetrically rotating along an axis parallel to the pipe conveying direction. The rotating shaft (432) is coaxially fixedly connected to a positioning drive roller (433) that cooperates with the first positioning roller group (41) and the second positioning roller group (42) to achieve pipe positioning and compaction. The rotating seat (431) is fixedly connected to a synchronous driving assembly (434) for synchronously driving the rotating shaft (432) to rotate synchronously in the opposite direction.

5. A laser tube cutting machine according to claim 4, characterized in that: The rotating assembly (43) comprises a first driving gear (435) coaxially fixedly connected to the rotating shaft (432) and a second driving gear (436) rotatably connected to the rotating seat (431) and cooperating with the first driving gear (435); the rotating seat (431) is fixedly connected with a synchronous rotating motor (437) for driving the second driving gear (436) to rotate.

6. The laser tube cutting machine according to claim 1, characterized in that: The material receiving device (7) is fixedly provided with a material unloading frame (6) below the second positioning roller group (42) for unloading finished products and tailings. The material unloading frame (6) includes a finished product unloading portion (61) and a tailings unloading trough (62) opened on the finished product unloading portion (61) and aligned with the gap between the first positioning roller group (41) and the second positioning roller group (42). The finished product unloading portion (61) is fixedly provided with an inclined tailings unloading portion (63) on the tailings unloading trough (62).

7. The laser tube cutting machine according to claim 6, characterized in that: The material receiving device (7) comprises a horizontal adjustment slide rail (71) fixedly connected to the frame (3) in parallel with the pipe conveying direction and a horizontal adjustment seat (72) slidably connected to the horizontal adjustment slide rail (71) in the horizontal direction; a finished product receiving seat (74) is slidably connected to the horizontal adjustment seat (72) in the vertical direction based on the vertical adjustment slide rail (73); a lifting adjustment rack (75) arranged in the vertical direction is fixedly connected to the horizontal adjustment seat (72); a lifting adjustment gear (76) cooperating with the lifting adjustment rack (75) is rotatably connected to the finished product receiving seat (74) and a material receiving motor (77) is fixedly connected to drive the lifting adjustment gear (76) to rotate.

8. The laser tube cutting machine according to claim 1, characterized in that: The tube positioning and rotating device (4) and the laser cutting device (5) are provided with at least two groups so as to realize synchronous cutting processing of multiple tubes.

9. The laser tube cutting machine according to claim 3, characterized in that: A tail material pushing assembly (8) is provided between the first positioning roller group (41) and the second positioning roller group (42), and the tail material pushing assembly (8) includes a first pushing cylinder (81) fixedly connected to the frame (3) and a second pushing cylinder (82) fixedly connected to the spacing adjustment seat (48) along the vertical direction, and the sliding ends of the first pushing cylinder (81) and the second pushing cylinder (82) are fixedly connected with a pushing plate (83) respectively fitted with the second positioning roller (47) and the third positioning roller (410), and the pushing plate (83) matches the shape of the second positioning roller (47) and the third positioning roller (410).

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