Laser pipe cutting machine

Abstract

The utility model relates to the technical field of laser cutting, and discloses a laser pipe cutting machine which comprises a side hanging lathe bed, a mounting side seat, a reinforcing side seat, a supporting seat, a portal frame, a laser cutting assembly, a first chuck structure, a second chuck structure and a third chuck structure. A first wiring port, a second wiring port and a third wiring port are formed in the side hanging bed body; a centering follow-up mechanism is arranged on the mounting side seat; the plurality of first wiring ports are used for collecting lines of the corresponding centering follow-up mechanisms to the rear side of the side hanging bed body; a discharging mechanism is arranged between every two adjacent reinforcing side seats, and the multiple second wiring ports are used for collecting lines of the corresponding discharging mechanisms to the rear side of the side hanging lathe bed. The number of the third wiring ports is three, and the third wiring ports are used for collecting lines of the first chuck structure, the second chuck structure and the third chuck structure to the rear side of the side hanging lathe bed. Through the arrangement, lines of all the mechanisms and three chuck structures can be processed in a centralized mode.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, and in particular to a laser tube cutting machine. Background Technology

[0002] The three-chuck laser tube cutting machine can be referenced in the patent document with publication number CN217412852U. The fixed base involved does not have corresponding wiring ports, so the wiring of the feeding conveyor, the unloading conveyor, and the three chucks cannot be centrally managed. The laser tube cutting machine using the above-mentioned fixed base has its wiring run from the bottom of the fixed base, which not only affects the aesthetics but also makes it difficult to centrally manage the wiring.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a laser tube cutting machine, which is designed to open multiple cable routing ports on the bed to accommodate the convergence of cables from various mechanisms.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A laser tube cutting machine includes a side-mounted bed, multiple mounting seats on the left side of the side-mounted bed, multiple reinforcing seats on the right side of the side-mounted bed, a support base between adjacent mounting seats and reinforcing seats, a gantry spanning the side-mounted bed and the support base, a laser cutting assembly mounted on the gantry, and a first chuck structure, a second chuck structure, and a third chuck structure that slide sequentially along the Y-axis of the side-mounted bed; the side-mounted bed has multiple first wiring ports, second wiring ports, and third wiring ports arranged along its length; the mounting seats... A centering follow-up mechanism is provided, which is used to clamp the pipe and center it. Multiple first wiring ports correspond to the centering follow-up mechanism and are used to collect the wiring of the corresponding centering follow-up mechanism to the rear side of the side-mounted bed. A feeding mechanism is provided between adjacent reinforced side seats, and multiple second wiring ports correspond to the feeding mechanism and are used to collect the wiring of the corresponding feeding mechanism to the rear side of the side-mounted bed. Three third wiring ports are provided, which are used to collect the wiring of the first chuck structure, the second chuck structure and the third chuck structure to the rear side of the side-mounted bed, respectively.

[0007] The laser tube cutting machine, wherein the side-mounted bed includes a first subframe and a second subframe disposed on one side of the first subframe and spliced ​​together; a plurality of mounting side seats are disposed on the front side of the first subframe, and a first cable routing port penetrates the front and rear side walls of the first subframe; a plurality of reinforcing side seats are disposed on the front side of the second subframe, and a second cable routing port penetrates the front and rear side walls of the second subframe; a support seat is disposed on the front side of the second subframe, and the lower surface of the front side of the gantry frame is fixedly connected to the upper surface of the support seat; a third cable routing port penetrates the first subframe and the second subframe.

[0008] The laser tube cutting machine, wherein the first subframe and the second subframe each include a horizontal tube group consisting of multiple horizontal tubes stacked and fixed together, and a reinforcing frame disposed behind the horizontal tube group.

[0009] The laser tube cutting machine includes a reinforcing frame comprising an upper reinforcing beam, a lower reinforcing beam positioned below the upper reinforcing beam, and multiple connecting vertical beams for connecting the upper and lower reinforcing beams. The bottom of each connecting vertical beam has a notch for wiring near the horizontal tube assembly. The upper reinforcing beam, the lower reinforcing beam, and the connecting vertical beams form a wiring cavity. The first wiring port and the second wiring port are located on the horizontal tube assembly, and the third wiring port is located on the upper reinforcing beam.

[0010] In the laser tube cutting machine, the height of the reinforcing upper crossbeam is lower than the height of the uppermost horizontal tube in the horizontal tube group; the upper surface of the reinforcing upper crossbeam is used to support three Y-axis drag chains, and the three Y-axis drag chains correspond to the first chuck structure, the second chuck structure and the third chuck structure, respectively.

[0011] The laser tube cutting machine is provided with a first exhaust and dust removal port that runs through its front and rear side walls on the side hanging bed, and a second exhaust and dust removal port that runs through its left and right side walls on the support base. The second exhaust and dust removal port and the first exhaust and dust removal port are connected by an exhaust and dust removal pipe. The first exhaust and dust removal port is located away from the cutting area of ​​the gantry frame.

[0012] The laser tube cutting machine, wherein the centering follow-up mechanism includes a fixed vertical plate fixed on the mounting side seat, a lifting slide plate movable up and down on the fixed vertical plate, a lifting drive mechanism for driving the lifting slide plate up and down, and a clamping positioning mechanism disposed on the lifting slide plate. The clamping positioning mechanism is used to clamp the tube to a set position to achieve positioning. The top of the lifting slide plate is provided with two supports, and the two supports together support a horizontally extending and rotatable support roller.

[0013] The laser tube cutting machine, wherein the clamping and positioning mechanism includes a first guide rail extending laterally on the lifting slide plate, two L-shaped clamping rods mounted on the first guide rail via a first slider, and a clamping rod driving mechanism for driving the two L-shaped clamping rods to move closer or further apart from each other.

[0014] The laser tube cutting machine includes a clamping rod driving mechanism comprising a cylinder bracket mounted on a lifting slide plate, a driving cylinder mounted vertically upward on the cylinder bracket, a traction block at the end of the piston rod of the driving cylinder, a vertically extending second guide rail on the lifting slide plate, the traction block being slidably connected to the second guide rail via a second slider, and two L-shaped clamping rods being connected to the traction block via pull rods.

[0015] The laser tube cutting machine, wherein the lifting drive mechanism includes two third guide rails extending vertically and symmetrically arranged on a fixed vertical plate, a first rack fixed on the fixed vertical plate and extending vertically, a lifting drive motor mounted on a lifting slide plate, and a first gear sleeved on the main shaft of the lifting drive motor; the first rack meshes with the first gear for transmission, and the lifting slide plate is slidably connected to the third guide rails through a third slider.

[0016] Beneficial effects:

[0017] This utility model provides a laser tube cutting machine. By opening multiple first, second, and third wiring ports at corresponding positions on the side-mounted bed, and coordinating them with the positions of the centering follow-up mechanism, the unloading mechanism, and the three chuck structures, the wiring of the above-mentioned mechanisms can be centrally processed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a laser tube cutting machine.

[0019] Figure 2 Schematic diagram of the side-mounted bed frame Figure 1 .

[0020] Figure 3 Schematic diagram of the side-mounted bed frame Figure 2 .

[0021] Figure 4 This is a schematic diagram of the centering follower mechanism.

[0022] Key component symbols: 1-Side-mounted bed, 11-First sub-frame, 111-First cable routing port, 12-Second sub-frame, 121-Second cable routing port, 122-First exhaust and dust removal port, 13-Mounting side seat, 14-Reinforced side seat, 15-Support seat, 151-Second exhaust and dust removal port, 16-Gantry frame, 17-Horizontal tube assembly, 18-Reinforcing frame, 181-Reinforced upper crossbeam, 1811-Third cable routing port, 182-Reinforced lower crossbeam, 183-Connecting vertical beam, 18 4-Way routing corner notch, 2-Laser cutting component, 3-Centering follow-up mechanism, 31-Fixed vertical plate, 32-Lifting slide plate, 33-Support, 34-Support roller, 35-First guide rail, 36-First slider, 37-L-shaped clamping rod, 39-Drive cylinder, 41-Traction block, 42-Second guide rail, 43-Pull rod, 44-Third guide rail, 45-Third slider, 46-Lifting drive motor, 51-First chuck structure, 52-Second chuck structure, 53-Third chuck structure. Detailed Implementation

[0023] This utility model provides a laser tube cutting machine. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0024] Please see Figures 1-3 This utility model provides a laser tube cutting machine, including a side-mounted bed 1, multiple mounting side seats 13 disposed on the left side of the side-mounted bed 1, multiple reinforcing side seats 14 disposed on the right side of the side-mounted bed 1, a support seat 15 disposed between adjacent mounting side seats 13 and reinforcing side seats 14, a gantry frame 16 spanning the side-mounted bed 1 and the support seat 15, a laser cutting assembly 2 disposed on the gantry frame 16, and a first chuck structure 51, a second chuck structure 52 and a third chuck structure 53 sequentially slidably disposed along the Y-axis direction of the side-mounted bed 1; the side-mounted bed 1 has multiple first wiring ports 111, second wiring ports 121 and third wiring ports 18 disposed along its length direction. 11; The mounting side seat 13 is provided with a centering follower mechanism 3, which is used to clamp the pipe and center it; a plurality of first wiring ports 111 correspond to the centering follower mechanism 3 and are used to collect the lines of the corresponding centering follower mechanism 3 to the rear side of the side hanging bed 1; a feeding mechanism is provided between adjacent reinforced side seats 14, a plurality of second wiring ports 121 correspond to the feeding mechanism and are used to collect the lines of the corresponding feeding mechanism to the rear side of the side hanging bed 1; three third wiring ports 1811 are provided, which are respectively used to collect the lines of the first chuck structure 51, the second chuck structure 52 and the third chuck structure 53 to the rear side of the side hanging bed 1.

[0025] The pipe to be cut is fed into the centering follower mechanism 3. The centering follower mechanism 3 then centers and positions the pipe and lifts it to be coaxial with the first chuck structure 51, the second chuck structure 52, and the third chuck structure 53. The pipe is clamped by the first chuck structure 51 and the second chuck structure 52, and is pushed towards the laser cutting assembly 2 by the first chuck structure 51 to achieve cutting feed. The cut-off pipe segment is clamped by the third chuck structure 53 and unloaded with the cooperation of the unloading mechanism. Moreover, since the second chuck structure 52 can move relative to the laser cutting assembly 2, when there is remaining pipe material, the laser cutting head of the laser cutting assembly 2 is vertically downward, reducing the distance between the second chuck structure 52 and the laser cutting assembly 2, and then directly cutting the remaining pipe material, thereby reducing the amount of residual material.

[0026] In practical applications, after the centering follower mechanism 3 is uniformly installed on the right side wall of the corresponding mounting side seat 13, the cable of the centering follower mechanism 3 can be guided to the rear of the side hanging bed 1 through the nearest first cable routing port 111 on the side hanging bed 1. Similarly, after the unloading mechanism is assembled, the cable of the unloading mechanism is guided to the rear of the side hanging bed 1 through the nearest second cable routing port 121. The cables of the first chuck structure 51, the second chuck structure 52, and the third chuck structure 53 are guided to the rear of the side hanging bed 1 through the corresponding third cable routing port 1811. In this embodiment, an electrical control cabinet is also set at the rear of the gantry 16. The cables of the laser cutting component 2 located on the gantry 16 are also gathered in the electrical control cabinet. Therefore, the cables passing through the rear of the side hanging bed 1 can be guided to the electrical control cabinet for centralized management after being gathered.

[0027] The aforementioned laser tube cutting machine has multiple first wiring ports 111, second wiring ports 121 and third wiring ports 1811 at corresponding positions on the side-mounted bed 1. These ports are coordinated with the positions of the centering follow-up mechanism 3, the unloading mechanism and the three chuck structures, so that the wiring of the aforementioned mechanisms can be centrally processed.

[0028] Please see Figure 2In some embodiments, the side-mounted machine bed 1 includes a first subframe 11 and a second subframe 12 disposed on one side of the first subframe 11 and spliced ​​together; a plurality of mounting side seats 13 are disposed on the front side of the first subframe 11, and the first cable routing port 111 penetrates the front and rear side walls of the first subframe 11; a plurality of reinforcing side seats 14 are disposed on the front side of the second subframe 12, and the second cable routing port 121 penetrates the front and rear side walls of the second subframe 12; a support seat 15 is disposed on the front side of the second subframe 12, and the lower surface of the front side of the gantry frame 16 is fixedly connected to the upper surface of the support seat 15; a third cable routing port 1811 penetrates the first subframe 11 and the second subframe 12. Specifically, the first subframe 11 and the second subframe 12 are mounted together by a precision mounting surface and fixed by fastening bolts. The splicing design of the first subframe 11 and the second subframe 12 is used to shorten the length of the side-mounted machine bed 1, providing convenience for subsequent large gantry milling operations. By limiting the location of each cable routing port, the layout of the cable routing ports becomes more reasonable.

[0029] Please see Figure 2 and Figure 3 In some embodiments, both the first subframe 11 and the second subframe 12 include a horizontal tube assembly 17 consisting of multiple horizontal tubes stacked and fixed together, and a reinforcing frame 18 disposed behind the horizontal tube assembly 17. The horizontal tube assembly 17 is composed of multiple horizontal tubes stacked together, and horizontal tubes of different heights can be selected for stacking according to the height of the side-mounted bed 1. The manufacturing process is simple and can be completed without cutting large-format panels, which helps to reduce manufacturing costs. The reinforcing frame 18 is provided to improve the structural rigidity of the side-mounted bed 1 and to provide cable routing space, making full and reasonable use of the space layout of the base frame.

[0030] Please see Figure 3In some embodiments, the reinforcing frame 18 includes a reinforcing upper crossbeam 181, a reinforcing lower crossbeam 182 disposed below the reinforcing upper crossbeam 181, and multiple connecting vertical beams 183 for connecting the reinforcing upper crossbeam 181 and the reinforcing lower crossbeam 182; the bottom of the connecting vertical beam 183 has a wiring notch 184 near the horizontal tube assembly 17; the reinforcing upper crossbeam 181, the reinforcing lower crossbeam 182, and the connecting vertical beams 183 form a wiring cavity; the first wiring port 111 and the second wiring port 121 are disposed on the horizontal tube assembly 17, and the third wiring port 1811 is disposed on the reinforcing upper crossbeam 181. The reinforcing upper crossbeam 181 and the reinforcing lower crossbeam 182, together with the connecting vertical beams 183, constitute a more stable frame structure, significantly enhancing the rigidity and deformation resistance of the entire side-mounted bed 1. By defining the positions of the first cable routing port 111, the second cable routing port 121, and the third cable routing port 1811, they are adapted to the centering follow-up mechanism 3, the unloading mechanism, and the positions of the three chucks relative to the side-mounted bed 1. Furthermore, the cable routing notch 184 is designed to cooperate with the first cable routing port 111, the second cable routing port 121, and the third cable routing port 1811, so that the cables gathered in the cable routing cavity are uniformly processed through the cable routing notch 184. The above settings provide a more convenient wiring channel, standardize the route of the line, improve both aesthetics and safety, and simplify the maintenance and repair process.

[0031] Please see Figure 3 In some embodiments, the height of the reinforcing upper crossbeam 181 is lower than the height of the uppermost horizontal tube of the horizontal tube assembly 17; the upper surface of the reinforcing upper crossbeam 181 is used to support three Y-axis cable chains, which correspond to the first chuck structure 51, the second chuck structure 52, and the third chuck structure 53, respectively. The three Y-axis cable chains protect the cables of the three chuck structures, preventing them from being pulled during movement. The upper surface of the reinforcing upper crossbeam 181 serves as a support surface for the Y-axis cable chains, supporting their movement.

[0032] In the above-mentioned components, the horizontal tubes, the reinforcing upper horizontal beam 181, the reinforcing lower horizontal beam 182, and the connecting vertical beam 183 on the horizontal tube assembly 17 are all made of rectangular or square steel tubes, which have sufficient structural strength and rigidity. All components within the first subframe 11 and the second subframe 12 are fixed by welding, resulting in good overall structural strength.

[0033] Please see Figure 1 and Figure 2In some embodiments, the side-mounted bed 1 is further provided with a first exhaust dust removal port 122 penetrating its front and rear side walls, and the support base 15 is provided with a second exhaust dust removal port 151 penetrating its left and right side walls. The second exhaust dust removal port 151 and the first exhaust dust removal port 122 are connected by an exhaust dust removal pipe (not shown in the figure); the first exhaust dust removal port 122 is located away from the cutting area of ​​the gantry frame 16. By providing a second exhaust dust removal port 151 on the support base 15 below the gantry frame 16, the second exhaust dust removal port 151 is positioned closest to the laser cutting assembly 2. The exhaust dust removal pipe works in conjunction with the exhaust dust removal mechanism to directly extract metal dust generated during the laser cutting process, effectively reducing the spread of dust in the workshop, improving the working environment, and protecting the health of operators. Furthermore, in this embodiment, the second exhaust dust removal port 151 serves as the air inlet, and the first exhaust dust removal port 122 serves as the air outlet. The exhaust dust removal mechanism can be designed to be located at the rear of the equipment, or led out of the workshop via a pipe, with only the exhaust pipe exposed. This optimizes the dust removal path and improves the aesthetics of the equipment. Specifically, the gantry frame 16 and the laser cutting assembly 2 are enclosed in a protective box using sheet metal parts. The interior of the protective box is the cutting area. Therefore, the first exhaust dust removal port 122 is located on the left side of the protective box, meaning it extends outside the protective box.

[0034] Please see Figure 4 In some embodiments, the centering follow-up mechanism 3 includes a fixed vertical plate 31 fixed on the mounting side seat 13, a lifting slide plate 32 movably disposed on the fixed vertical plate 31, a lifting drive mechanism for driving the lifting slide plate 32 to move up and down, and a clamping positioning mechanism disposed on the lifting slide plate 32. The clamping positioning mechanism is used to clamp the pipe to a set position to achieve positioning. The top of the lifting slide plate 32 is provided with two supports 33, and the two supports 33 jointly support a horizontally extending and rotatable support roller 34. After the loading rack automatically transports the pipe to the support roller 34, the support roller 34 supports the pipe. The clamping and positioning mechanism first clamps the pipe to the middle of the support roller 34, and then the lifting drive mechanism lifts the pipe to the set height, so that the pipe is coaxial with the first chuck structure 51, the second chuck structure 52 and the third chuck structure 53, so that the first chuck structure 51 and the second chuck structure 52 can clamp the pipe. During the processing, the support roller 34 provides follow-up support for the pipe. When the pipe needs to rotate or interferes with the movement of the first chuck structure 51, the lifting drive mechanism controls the components on the lifting slide plate 32 to descend to avoid it.

[0035] Please see Figure 4In some embodiments, the clamping and positioning mechanism includes a first guide rail 35 extending laterally on the lifting slide plate 32, two L-shaped clamping rods 37 mounted on the first guide rail 35 via a first slider 36, and a clamping rod driving mechanism for driving the two L-shaped clamping rods 37 closer to or further apart. The structural design of the first guide rail 35 and the first slider 36 allows the two L-shaped clamping rods 37 to slide freely laterally. When the pipe is placed on the support roller 34, the clamping rod driving mechanism drives the two L-shaped clamping rods 37 closer to each other, pushing and positioning the pipe at the middle of the support roller 34. This not only ensures adaptability to pipes of different diameters but also allows for precise adjustment of the spacing between the L-shaped clamping rods 37 according to the pipe size, achieving stable and precise clamping of the pipe.

[0036] Please see Figure 4 In some embodiments, the clamping rod driving mechanism includes a cylinder bracket (not shown in the figure) mounted on the lifting slide plate 32, and a driving cylinder 39 vertically mounted on the cylinder bracket. The piston rod end of the driving cylinder 39 is provided with a traction block 41. The lifting slide plate 32 is provided with a vertically extending second guide rail 42. The traction block 41 is slidably connected to the second guide rail 42 via a second slider. Two L-shaped clamping rods 37 are respectively connected to the traction block 41 via pull rods 43. When the piston rod of the driving cylinder 39 retracts, it pulls the traction block 41 downwards, thereby causing the pull rods 43 to pull the two L-shaped clamping rods 37 closer together, thus pushing the pipe to the middle of the support roller 34 and clamping the pipe. When the piston rod of the driving cylinder 39 extends, it releases the pipe.

[0037] Please see Figure 4 In some embodiments, the lifting drive mechanism includes two third guide rails 44 extending vertically and symmetrically arranged on the fixed vertical plate 31, a first rack fixed on the fixed vertical plate 31 and extending vertically, a lifting drive motor 46 mounted on the lifting slide plate 32, and a first gear sleeved on the main shaft of the lifting drive motor 46; the first rack meshes with the first gear for transmission, and the lifting slide plate 32 is slidably connected to the third guide rails 44 via a third slider 45. This arrangement allows for precise control of the height of the support rollers 34 lifting the pipe, thereby ensuring that the pipe is coaxial with the first chuck structure 51, the second chuck structure 52, and the third chuck structure 53, achieving follow-up support during processing.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A laser tube cutting machine characterized by, The side-hung bed body, a plurality of mounting side seats arranged on the left side of the side-hung bed body, a plurality of reinforcing side seats arranged on the right side of the side-hung bed body, support seats arranged between adjacent mounting side seats and reinforcing side seats, a gantry spanning the side-hung bed body and the support seats, a laser cutting assembly arranged on the gantry, and a first chuck structure, a second chuck structure and a third chuck structure arranged in sequence along the Y-axis direction of the side-hung bed body; a plurality of first wire outlets, second wire outlets and third wire outlets are arranged on the side-hung bed body along the length direction thereof; a centering follow-up mechanism is arranged on the mounting side seat, which is used for clamping the pipe to center the pipe; a plurality of first wire outlets correspond to the centering follow-up mechanism and are used for collecting the lines of the corresponding centering follow-up mechanism to the back side of the side-hung bed body; a blanking mechanism is arranged between adjacent reinforcing side seats, and a plurality of second wire outlets correspond to the blanking mechanism and are used for collecting the lines of the corresponding blanking mechanism to the back side of the side-hung bed body; the third wire outlet is arranged in three and is used for collecting the lines of the first chuck structure, the second chuck structure and the third chuck structure to the back side of the side-hung bed body.

2. The laser tube cutting machine of claim 1, wherein, The side-hung bed body includes a first sub-frame and a second sub-frame arranged on one side of the first sub-frame and spliced with each other; a plurality of mounting side seats are arranged on the front side of the first sub-frame, and the first wire outlets penetrate through the front and rear side walls of the first sub-frame; a plurality of reinforcing side seats are arranged on the front side of the second sub-frame, and the second wire outlets penetrate through the front and rear side walls of the second sub-frame; the support seat is arranged on the front side of the second sub-frame, and the lower surface of the front side of the gantry is fixedly connected with the upper surface of the support seat; the third wire outlet penetrates through the first sub-frame and the second sub-frame.

3. The laser tube cutting machine of claim 2, wherein, The first sub-frame and the second sub-frame each include a horizontal pipe group formed by a plurality of horizontal pipes stacked and fixedly connected, and a reinforcing frame arranged behind the horizontal pipe group.

4. The laser tube cutting machine of claim 3, wherein, The reinforcing frame includes a reinforcing upper horizontal beam, a reinforcing lower horizontal beam arranged below the reinforcing upper horizontal beam, and a plurality of connecting vertical beams for connecting the reinforcing upper horizontal beam and the reinforcing lower horizontal beam; the bottom of the connecting vertical beam is provided with a wire outlet corner at a position close to the horizontal pipe group; the reinforcing upper horizontal beam, the reinforcing lower horizontal beam and the connecting vertical beam form a wire cavity; the first wire outlet and the second wire outlet are arranged on the horizontal pipe group, and the third wire outlet is arranged on the reinforcing upper horizontal beam.

5. The laser tube cutting machine of claim 4, wherein, The height of the reinforcing upper horizontal beam is lower than the height of the uppermost horizontal pipe of the horizontal pipe group; the upper surface of the reinforcing upper horizontal beam is used for supporting three Y-axis drag chains corresponding to the first chuck structure, the second chuck structure and the third chuck structure.

6. The laser pipe cutting machine of claim 1, wherein, The side-hung bed body is further provided with a first air extraction dust removal port penetrating through the front and rear side walls thereof, and the support seat is provided with a second air extraction dust removal port penetrating through the left and right side walls thereof, and the second air extraction dust removal port and the first air extraction dust removal port are connected through an air extraction dust removal pipe; the first air extraction dust removal port is arranged away from the cutting area of the gantry.

7. The laser pipe cutting machine of claim 1, wherein, The centering follow-up mechanism comprises a fixed vertical plate fixed on the mounting side seat, a lifting slide plate movably arranged on the fixed vertical plate, a lifting driving mechanism for driving the lifting slide plate to move up and down, and a clamping positioning mechanism arranged on the lifting slide plate, the clamping positioning mechanism is used for clamping the pipe to a set position to realize positioning, the top of the lifting slide plate is provided with two supports, and the two supports jointly support a transversely extending and rotatable supporting roller.

8. The laser tube cutting machine of claim 7, wherein, The clamping positioning mechanism comprises a first guide rail arranged transversely on the lifting slide plate, two L-shaped clamping rods arranged on the first guide rail through first sliding blocks, and a clamping rod driving mechanism for driving the two L-shaped clamping rods to move close to or away from each other.

9. The laser tube cutting machine of claim 8, wherein, The clamping rod driving mechanism comprises a cylinder support arranged on the lifting slide plate and a driving cylinder arranged vertically upward on the cylinder support, the end of the piston rod of the driving cylinder is provided with a traction block, the lifting slide plate is provided with a vertically extending second guide rail, the traction block is slidably connected with the second guide rail through a second sliding block, and the two L-shaped clamping rods are respectively connected with the traction block through pull rods.

10. The laser tube cutting machine of claim 7, wherein, The lifting driving mechanism comprises two third guide rails extending vertically and symmetrically arranged on the fixed vertical plate, a first rack fixed on the fixed vertical plate and extending vertically, a lifting driving motor mounted on the lifting slide plate, and a first gear sleeved on the main shaft of the lifting driving motor; the first rack is in meshing transmission with the first gear, and the lifting slide plate is slidably connected with the third guide rails through third sliding blocks.

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