Metal pipe fixed-length laser cutting device and method for pipe butt assembly

Abstract

This invention relates to the field of laser cutting technology for metal pipes, and discloses a fixed-length laser cutting device and method for pipe butt assembly. The fixed-length laser cutting device for pipe butt assembly includes a side plate, a conveyor table on the side plate, a base at the bottom of the side plate, an electric actuator at the top of the side plate, a laser cutting head at the output end of the electric actuator, two receiving boxes symmetrically distributed on the base, and an inner ring on the side plate. This fixed-length laser cutting device for pipe butt assembly thoroughly removes debris from inside the pipe through jet nozzles and adjustable components to control the spray speed, preventing debris from abrading the pipe wall, clogging components, or causing vibration and other safety hazards. The internal clamping component clamps the pipe from the inside during cleaning, ensuring thorough debris removal. This significantly reduces the risk of pipe malfunctions during operation and extends the service life of the pipe, making it particularly suitable for harsh environments such as high pressure, flammable and explosive environments.

Description

Technical Field

[0001] This invention relates to the field of metal pipe laser cutting technology, and in particular to a fixed-length metal pipe laser cutting device and method for pipe butt assembly. Background Technology

[0002] In the industrial manufacturing sector, the cutting and processing of metal pipes is an indispensable key link in many industries. Traditional cutting methods, such as mechanical cutting and flame cutting, suffer from insufficient precision, low efficiency, and serious material waste, making it difficult to meet the demands of modern industry for complex-shaped, high-precision pipe components. With the rapid development of laser technology, laser cutting of metal pipes has emerged. It utilizes a high-energy-density laser beam focused on the pipe surface, causing the material to melt, vaporize, or be blown away instantly, thereby achieving precise cutting. This technology can not only process various metal materials such as carbon steel, stainless steel, and aluminum alloys, but also easily complete the processing of complex beveling and irregular holes, significantly improving product quality. When existing laser cutting machines cut pipes, the high-energy laser beam causes the metal to melt and vaporize instantly. Some of the molten material is not completely blown away by the auxiliary gas, forming debris. This debris tends to accumulate on the inner wall of the pipe and is difficult to remove, resulting in internal debris residue. Existing laser cutting machines also have the following drawbacks in use:

[0003] When lasers cut metal pipes, the resulting debris can become a potential safety hazard if it remains inside the pipe. In fluid transport scenarios, such as petrochemical pipelines and water supply pipelines, the debris may flow with the medium, causing wear on the inner wall of the pipe. Over time, this can lead to thinning of the pipe wall and increase the risk of leakage. For high-pressure pipelines, the debris may also form localized eddies under the impact of high-speed fluid, causing pipeline vibration, or even colliding with the inner wall of the pipe to generate sparks, which can easily lead to safety accidents in flammable and explosive environments. Furthermore, if the debris blocks valves, instruments, or other critical components, it can cause equipment malfunction, affecting the normal operation of the entire system and causing serious production losses.

[0004] Debris inside pipes can cause numerous inconveniences in subsequent processing and installation, significantly increasing handling costs. During pipe welding, if debris adheres to the weld joint, it can lead to weak welds, defects such as porosity and cracks, requiring additional cleaning and repair work and extending the production cycle. For pipe components in precision instruments, debris may affect their sealing and precision, necessitating thorough cleaning. This not only requires specialized cleaning equipment and manpower but also risks secondary damage to the pipes due to improper cleaning, further increasing production costs. Summary of the Invention

[0005] Given the problems of existing technologies, such as the presence of debris inside the pipe during cutting affecting operational safety, potentially abrading the pipe wall, causing vibration or clogging components, increasing the risk of accidents, increasing costs, interfering with welding, affecting accuracy, requiring additional cleaning and repair, and extending the cycle, a fixed-length laser cutting device for metal pipes for pipe docking and assembly is proposed.

[0006] This application provides a fixed-length laser cutting device for metal pipes used in pipe assembly. Its purpose is to reduce the amount of debris left inside the pipe during laser cutting, avoid debris abrasion of the pipe wall and blockage of components, and ensure the safe operation of the pipe; at the same time, it reduces the subsequent cleaning and repair costs caused by debris, reduces interference with welding and other processes, and improves production efficiency.

[0007] The technical solution of the present invention is as follows: a fixed-length laser cutting device for metal pipes for pipe docking assembly, including a side plate, a conveying table provided on the side plate, a base provided at the bottom of the side plate, an electric push rod provided at the top of the side plate, a laser cutting head provided at the output end of the electric push rod, two receiving boxes symmetrically distributed on the base, an inner ring provided on the side plate, a plurality of first electric telescopic rods arranged in a ring array on the inner ring, a guide roller provided at the output end of the first electric telescopic rods, and a cleaning unit provided on the side plate;

[0008] The cleaning unit includes a cleaning component and a guiding component mounted on a base. The cleaning component includes a cleaning assembly mounted on the base, an adjustment assembly mounted on the cleaning assembly, a reset assembly mounted on the adjustment assembly, a stretching assembly mounted on the reset assembly, and an inner clamping assembly mounted on the cleaning assembly.

[0009] The cleaning component is used to clean the debris inside the cut metal pipe, and the feeding component is used to discharge the cut metal pipe and debris separately.

[0010] The cleaning assembly includes a slide groove on the base, an upright plate inside the slide groove, and a threaded rod inside the slide groove. The upright plate and the threaded rod are threaded together. A second electric telescopic rod is installed on the upright plate. The output end of the second electric telescopic rod passes through the upright plate and is provided with a hollow disc. Multiple air cylinders are arranged in a circular array on the hollow disc. Air nozzles are installed on the air cylinders. An air guide pipe is installed on the upright plate and communicates with the interior of the hollow disc.

[0011] Furthermore, the adjustment component includes an inner cylinder disposed inside the air cylinder, the inner cylinder having an air hole, and multiple adjustment plugs disposed inside the air cylinder, the diameter of the multiple adjustment plugs gradually increasing towards the side away from the air hole.

[0012] Furthermore, the reset assembly includes a reset ring disposed on the inner cylinder, a guide groove disposed inside the air cylinder, a guide block disposed inside the guide groove, a reset spring disposed between the guide block and the inner wall of the guide groove, and the reset ring being in a sealed sliding connection with the inner side of the air cylinder.

[0013] Furthermore, the tensioning assembly includes a steel wire rope disposed on the reset ring, a guide post disposed inside the hollow disc, a guide wheel disposed on the guide post, the steel wire rope and the guide wheel being rolled together, and the end of the steel wire rope away from the reset ring passing through the hollow disc and being fixedly connected to the upright plate.

[0014] Furthermore, the inner clamping assembly includes a fixed plate mounted on the upright plate, and the second electric telescopic rod, the air guide pipe, and the steel wire rope are all connected through the fixed plate. Multiple third electric telescopic rods are arranged in a circular array on the fixed plate, and a ball is provided at the output end of the third electric telescopic rod.

[0015] Furthermore, the material guiding component includes a material guiding assembly disposed on the side plate and a pushing assembly disposed on the base;

[0016] The material guiding assembly includes a material guiding plate disposed on the side plate, a cylinder disposed on the material guiding plate, and a threaded groove disposed on the cylinder.

[0017] Furthermore, the pushing assembly includes a cylinder mounted on a base, a movable plate mounted on the cylinder, a movable rod mounted on the movable plate, the movable rod being slidably connected to the inner side of a threaded groove, a piston disc mounted inside the cylinder, a pushing spring being mounted between the piston disc and the inner wall of the cylinder, an L-shaped rod mounted on the piston disc, the L-shaped rod being slidably connected to the cylinder, the L-shaped rod being fixedly connected to the movable plate, and a bent pipe mounted on the cylinder, the end of the bent pipe away from the cylinder being fixedly connected to an air guide pipe.

[0018] Furthermore, it also includes a transmission assembly disposed on the conveyor table, the transmission assembly comprising a plurality of inclined plates symmetrically distributed within the conveyor table, and a plurality of transmission rollers symmetrically distributed on the inclined plates.

[0019] Another object of the present invention is to provide a fixed-length laser cutting method for metal pipes used in pipe assembly, comprising the following steps:

[0020] S1: The operator places the metal pipe on the conveyor table, and sends one end into the inner ring. The first electric telescopic rod of the inner ring pushes the guide roller to clamp the pipe and achieve center positioning. The conveyor table drives the pipe to move and is transported smoothly with the assistance of the guide roller.

[0021] S2: The electric actuator pushes the laser cutting head downward, emitting a laser beam to cut the pipe. The inner ring maintains stable clamping to avoid vibration affecting accuracy. After the cutting is completed, the laser cutting head is reset.

[0022] S3: The threaded rod drives the vertical plate to move, the second electric telescopic rod pushes the hollow disc and the jet nozzle into the pipeline, the air guide pipe delivers air to the hollow disc, and the air is sprayed out from the jet nozzle through the air cylinder to blow away debris. The adjustment component adjusts the spray speed, the inner clamping component clamps the pipeline from the inside to prevent shaking, and the reset component resets the auxiliary parts.

[0023] S4: Gas from the gas duct enters the cylinder of the push assembly through the bend, pushing the piston disc to move the moving rod and causing the guide plate to rotate. When the gas pressure decreases, it pushes the spring to reset, and the guide plate returns to its original position. After cutting, the pipe and debris fall into the receiving box through the guide plate.

[0024] Furthermore, in S3, when the inner cylinder slides within the air cylinder, the relative position of the air hole on it and the adjusting plug inside the air cylinder changes, thereby achieving precise adjustment of the jet speed of the gas ejected from the jet nozzle.

[0025] The beneficial effects of this invention are:

[0026] The guide rollers on the inner ring precisely position the pipe, ensuring that the cutting length error is controlled within a very small range, significantly improving cutting accuracy. The laser cutting head, in conjunction with an electric push rod, enables automated cutting, avoiding the instability of manual operation. This reduces process connection time, further improving overall production efficiency and meeting the needs of mass production.

[0027] By using jet nozzles to blow away debris and adjusting the spray speed with adjustable components, the internal debris is thoroughly removed from the pipeline, preventing debris from abrading the pipe walls, clogging components, or causing vibrations that could pose safety hazards. The internal clamping component clamps the pipeline from the inside during cleaning, preventing shaking that could affect the cleaning effect and ensuring thorough debris removal. This significantly reduces the risk of pipeline malfunctions and extends pipeline lifespan, making it particularly suitable for harsh environments such as high-pressure, flammable, and explosive environments.

[0028] The jet nozzle's spray speed is adjusted by a tensioning component, reaching its maximum near the metal pipe opening to quickly eject debris away from the pipe. Automated operation reduces manual intervention and lowers labor costs. The feeding component and receiving box separate the debris from the pipe, eliminating subsequent sorting steps, optimizing the production process, and reducing secondary costs caused by improper debris handling, thus improving the company's economic efficiency. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the metal pipe fixed-length laser cutting device for pipe docking and assembly according to the present invention.

[0030] Figure 2 This is a schematic diagram of the fixed-length laser cutting device for metal pipe docking assembly of the present invention without the conveyor table.

[0031] Figure 3 This is a schematic diagram of the cleaning component structure of the metal pipe fixed-length laser cutting device for pipe docking assembly of the present invention;

[0032] Figure 4 This is a schematic diagram of the cleaning component structure of the metal pipe fixed-length laser cutting device for pipe docking assembly of the present invention;

[0033] Figure 5 This is a schematic diagram of the internal structure of the cleaning component of the metal pipe fixed-length laser cutting device for pipe docking assembly of the present invention;

[0034] Figure 6 This is a schematic diagram of the adjustment component structure of the metal pipe fixed-length laser cutting device for pipe docking assembly of the present invention;

[0035] Figure 7 This is a schematic diagram of the internal clamping component structure of the metal pipe fixed-length laser cutting device for pipe docking assembly of the present invention;

[0036] Figure 8 This is a schematic diagram of the material guiding component of the metal pipe fixed-length laser cutting device for pipe docking assembly according to the present invention;

[0037] Figure 9 This is a schematic diagram of the pushing component structure of the fixed-length laser cutting device for metal pipe docking assembly of the present invention;

[0038] Figure 10 This is a schematic diagram of the internal structure of the pushing component of the fixed-length laser cutting device for pipe docking assembly of the present invention;

[0039] Figure 11 This is a schematic diagram of the base structure of the metal pipe fixed-length laser cutting device for pipe docking and assembly according to the present invention;

[0040] Figure 12 This is a schematic cross-sectional view of the side plate of the metal pipe fixed-length laser cutting device for pipe docking assembly of the present invention.

[0041] Figure 13 This is a schematic diagram of the conductive component structure of the fixed-length laser cutting device for metal pipe docking assembly of the present invention.

[0042] In the picture:

[0043] 1. Side plate; 11. Conveyor table; 12. Base; 13. Electric actuator; 14. Laser cutting head; 15. Receiving box; 16. Inner ring; 17. First electric telescopic rod; 18. Guide roller; 2. Cleaning assembly; 21. Vertical plate; 22. Threaded rod; 23. Second electric telescopic rod; 24. Hollow disc; 25. Air cylinder; 26. Air nozzle; 27. Air guide pipe; 3. Adjustment assembly; 31. Inner cylinder; 32. Air hole; 33. Adjusting plug; 4. Reset assembly; 41. Reset ring ; 42. Guide block; 43. Return spring; 5. Tensioning assembly; 51. Steel wire rope; 52. Guide post; 6. Inner clamping assembly; 61. Fixed plate; 62. Third electric telescopic rod; 63. Ball; 7. Material guiding assembly; 71. Material guiding plate; 72. Cylinder; 8. Pushing assembly; 81. Cylinder; 82. Moving plate; 83. Moving rod; 84. Piston disc; 85. Pushing spring; 86. L-shaped rod; 87. Bend; 9. Conduction assembly; 91. Inclined plate; 92. Conduction roller. Detailed Implementation

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Example 1, referring to Figures 1-7 , Figure 11 and Figure 12This invention provides a first embodiment of a metal pipe fixed-length laser cutting device for pipe assembly, comprising a side plate 1, a conveyor table 11 fixedly connected to the side plate 1, a base 12 fixedly connected to the bottom of the side plate 1, an electric push rod 13 slidably connected to the top of the side plate 1, a laser cutting head 14 fixedly connected to the output end of the electric push rod 13, two receiving boxes 15 symmetrically distributed and fixedly connected to the base 12, an inner ring 16 rotatably connected to the side plate 1, a plurality of first electric telescopic rods 17 fixedly connected in a circular array on the inner ring 16, a guide roller 18 fixedly connected to the output end of the first electric telescopic rods 17, and a cleaning unit mounted on the side plate 1; the cleaning unit includes a cleaning component and a guiding component mounted on the base 12, the cleaning component including a cleaning assembly 2 mounted on the base 12, and an adjusting component 3 mounted on the cleaning assembly 2. A reset component 4 is installed on component 3, a tensioning component 5 is installed on reset component 4, and an inner clamping component 6 is installed on cleaning component 2. The cleaning component is used to clean the debris inside the cut metal pipe, and the guiding component is used to discharge the cut metal pipe and debris separately. The cleaning component 2 includes a slide groove opened on the base 12, a vertical plate 21 is slidably connected to the inner side of the slide groove, and a threaded rod 22 is rotatably connected to the inner side of the slide groove. The vertical plate 21 and the threaded rod 22 are threadedly connected. A second electric telescopic rod 23 is fixedly connected to the vertical plate 21. The output end of the second electric telescopic rod 23 passes through the vertical plate 21 and is fixedly connected to a hollow disk 24. Multiple air cylinders 25 are fixedly connected in a ring array on the hollow disk 24. Air nozzles 26 are fixedly connected to the air cylinders 25. An air guide pipe 27 is slidably connected to the vertical plate 21 and communicates with the inside of the hollow disk 24.

[0046] Specifically, the operator places the metal pipe to be cut on the conveyor table 11, and one end of the pipe is gradually fed into the inner ring 16. At this time, multiple first electric telescopic rods 17 on the inner ring 16 are activated simultaneously, and their output ends push the guide rollers 18 closer to the outer wall of the pipe until all guide rollers 18 are evenly attached to the surface of the pipe, achieving centered positioning and clamping of the pipe to prevent deviation during subsequent conveying and cutting. The drive component of the conveyor table 11 drives the metal pipe to move, and under the action of the guide rollers 18 on the inner ring 16, the pipe moves smoothly along the axial direction. Through the preset fixed length detection module of the device, when the front end of the pipe reaches the set cutting position, the conveying system automatically stops to ensure precise and controllable cutting length. After receiving the signal, the electric push rod 13 on the top of the side plate 1 extends downward, pushing the laser cutting head 14 to move quickly down to the cutting height. The laser cutting head 14 emits a high-energy laser beam, focusing on the part of the pipe to be cut, while the auxiliary gas nozzle sprays high-pressure gas to complete the cutting in conjunction with the laser beam. During the cutting process, the inner ring 16 maintains stable clamping of the pipe to avoid vibration affecting the cutting accuracy.

[0047] The cleaning unit starts immediately. Rotating the threaded rod 22 on the base 12 drives the threadedly connected vertical plate 21 to move along the slide groove towards the pipeline. When the vertical plate 21 reaches the appropriate position, the second electric telescopic rod 23 extends, pushing the hollow disc 24 and the connected air cylinder 25 and nozzle 26 into the pipeline. At this time, the air guide pipe 27 guides the high-pressure gas source into the hollow disc 24, which is then diverted by the air cylinder 25 and ejected from the nozzle 26 to blow away debris from the inner wall of the pipeline. This achieves automated operation, improving cutting accuracy and efficiency; the cleaning unit thoroughly removes debris, ensuring safe pipeline operation and reducing subsequent malfunctions; it is compatible with various pipe specifications, reducing labor and processing costs; and it achieves separation and collection of pipeline debris, optimizing the production process.

[0048] Reference Figure 5 and Figure 6 The adjusting component 3 includes an inner cylinder 31 that is slidably connected to the air cylinder 25. An air hole 32 is provided on the inner cylinder 31. Multiple adjusting plugs 33 are fixedly connected inside the air cylinder 25. The diameter of the multiple adjusting plugs 33 gradually increases towards the side away from the air hole 32.

[0049] Specifically, when the inner cylinder 31 slides within the air cylinder 25, the relative position of its air hole 32 and the adjusting plug 33 inside the air cylinder 25 changes. As the diameter of the adjusting plug 33 gradually increases towards the side furthest from the air hole 32, the ventilation gap formed by their interaction changes accordingly. A smaller gap results in a faster gas flow rate and increased spray speed; a larger gap results in a slower flow rate and decreased spray speed. This allows for precise adjustment of the gas spray speed from the nozzle 26, ensuring that when the nozzle 26 approaches the opening of the metal pipe, its spray speed increases, rapidly ejecting debris away from the metal pipe.

[0050] Example 2, refer to Figure 5 and Figure 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the reset component 4 includes a reset ring 41 fixedly connected to the inner cylinder 31, a guide groove is provided inside the air cylinder 25, a guide block 42 is slidably connected to the inner side of the guide groove, a reset spring 43 is fixedly connected between the guide block 42 and the inner wall of the guide groove, and the reset ring 41 is slidably and sealingly connected to the inner side of the air cylinder 25.

[0051] Specifically, when the inner cylinder 31 slides and adjusts within the air cylinder 25, the reset ring 41 moves synchronously with the inner cylinder 31, and the guide block 42 slides within the guide groove, compressing the reset spring 43. After adjustment, the external force disappears, the reset spring 43 releases its elasticity, pushing the guide block 42 back along the guide groove, causing the inner cylinder 31 to move back, and the reset ring 41 also returns to its initial position. Simultaneously, the sealing sliding between the reset ring 41 and the inner side of the air cylinder 25 ensures the airtightness of the air passage, guaranteeing the normal operation of the device after reset.

[0052] Reference Figure 4 and Figure 5The tensioning assembly 5 includes a steel wire rope 51 fixedly connected to the reset ring 41, a guide post 52 fixedly connected inside the hollow disc 24, a guide wheel fixedly installed on the guide post 52, the steel wire rope 51 and the guide wheel being rolled together, and the end of the steel wire rope 51 away from the reset ring 41 passing through the hollow disc 24 and fixedly connected to the upright plate 21.

[0053] Specifically, when the second electric telescopic rod 23 pushes the hollow disc 24 to move, it will change the distance between the hollow disc 24 and the upright plate 21, thereby pulling the wire rope 51. Under the guidance of the guide wheel on the guide post 52, the wire rope 51 changes direction, drives the reset ring 41 to move, thereby pulling the inner cylinder 31 to slide inside the air cylinder 25.

[0054] Reference Figure 7 The inner clamping component 6 includes a fixed plate 61 fixedly connected to the upright plate 21. The second electric telescopic rod 23, the air guide pipe 27 and the steel wire rope 51 are all connected through the fixed plate 61. Multiple third electric telescopic rods 62 are fixedly connected in a ring array on the fixed plate 61. The output end of the third electric telescopic rod 62 is rotatably connected to a ball 63.

[0055] Specifically, when the cleaning component 2 enters the pipe for cleaning, the fixed plate 61, fixed on the upright plate 21, moves to a suitable position along with the upright plate 21. Multiple third electric telescopic rods 62 on the fixed plate 61 are simultaneously activated, extending their output ends outwards and driving the end-mounted balls 63 towards the inner wall of the pipe. Once the balls 63 contact the inner wall of the pipe and apply a certain pressure, the third electric telescopic rods 62 stop moving, clamping the pipe from the inside through the coordinated action of the multiple balls 63. The balls 63 can rotate flexibly, neither affecting possible fine-tuning of the pipe nor hindering pipe displacement, ensuring the pipe does not shake during cleaning and guaranteeing both cleaning effectiveness and safety. The remaining structure is the same as in Embodiment 1.

[0056] Example 3, referring to Figure 8 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the material guiding component includes a material guiding assembly 7 installed on the side plate 1 and a pushing assembly 8 installed on the base 12. The material guiding assembly 7 includes a material guiding plate 71 rotatably connected to the side plate 1, a cylinder 72 fixedly connected to the material guiding plate 71, and a threaded groove provided on the cylinder 72.

[0057] Specifically, under the action of the pushing component 8, the cylinder 72 rotates, which drives the guide plate 71 to rotate, so that the guide plate 71 turns to one side, so that the cut metal pipes and debris fall into the two receiving boxes 15 respectively.

[0058] Reference Figures 8-10The pushing component 8 includes a cylinder 81 fixedly connected to the base 12, a movable plate 82 slidably connected to the cylinder 81, a movable rod 83 fixedly connected to the movable plate 82, the movable rod 83 slidably connected to the inner side of the threaded groove, a piston disc 84 slidably connected to the inner side of the cylinder 81, a pushing spring 85 fixedly connected between the piston disc 84 and the inner wall of the cylinder 81, an L-shaped rod 86 fixedly connected to the piston disc 84, the L-shaped rod 86 slidably connected to the cylinder 81, the L-shaped rod 86 fixedly connected to the movable plate 82, and a bent pipe 87 fixedly connected to the cylinder 81, the end of the bent pipe 87 away from the cylinder 81 being fixedly connected to the air guide pipe 27.

[0059] Specifically, the gas from the gas inlet pipe 27 enters the cylinder 81 via the bend pipe 87, pushing the piston disc 84 to compress the push spring 85, which in turn moves the L-shaped rod 86, causing the moving plate 82 and the moving rod 83 to slide. This causes the moving rod 83 to slide inside the threaded groove, and under the action of the threaded groove, the cylinder 72 rotates, causing the guide plate 71 to rotate to one side. When the gas pressure decreases, the push spring 85 returns to its original position, pulling the piston disc 84 back, and the L-shaped rod 86 causes the moving plate 82 and the moving rod 83 to return to their original positions. Through the cylinder 72, the guide plate 71 rotates to the other side.

[0060] Reference Figure 13 It also includes a transmission component 9 disposed on the conveyor table 11. The transmission component 9 includes a plurality of inclined plates 91 disposed symmetrically within the conveyor table 11, and a plurality of transmission rollers 92 disposed symmetrically on the inclined plates 91.

[0061] Specifically, the metal pipe is placed on the conveyor table 11 between two inclined plates 91, and under the action of the guide roller 92, the metal pipe moves stably on the conveyor table 11. The rest of the structure is the same as that in Embodiment 2.

[0062] Based on embodiments 1-3, the working principle of this invention is as follows: The operator places the metal pipe on the conveyor table 11, with one end inserted into the inner ring 16. The first electric telescopic rod 17 of the inner ring 16 pushes the guide roller 18 to clamp the pipe, achieving centered positioning. The conveyor table 11 drives the pipe to move, conveying it smoothly with the assistance of the guide roller 18. The electric push rod 13 pushes the laser cutting head 14 downward, emitting a laser beam to cut the pipe. The inner ring 16 maintains stable clamping to avoid vibration affecting accuracy. After cutting, the laser cutting head 14 resets. The threaded rod 22 drives the vertical plate 21 to move, and the second electric telescopic rod 23 pushes the hollow disc 24 and the air nozzle 26 into the pipe. The air guide pipe 27 delivers air to the hollow disc 24, which is then sprayed out from the air nozzle 26 through the air cylinder 25 to blow away debris. The adjusting component 3 adjusts the spray speed, the inner clamping component 6 clamps the pipe from the inside to prevent shaking, and the reset component 4 assists in resetting the components. Gas enters the cylinder 81 of the push assembly 8 via the bend 87 through the gas guide pipe 27, pushing the piston disc 84 to slide the moving rod 83, causing the guide plate 71 to rotate. When the gas pressure decreases, the spring 85 is pushed back to its original position, and the guide plate 71 returns to its original position. After cutting, the pipe and debris fall into the receiving box 15 through the guide plate 71.

[0063] Example 4, the fourth embodiment of the present invention, provides: a method for laser cutting a fixed-length metal pipe for pipe docking assembly, comprising the following steps:

[0064] S1: The operator places the metal pipe on the conveyor table 11, and sends one end into the inner ring 16. The first electric telescopic rod 17 of the inner ring 16 pushes the guide roller 18 to clamp the pipe and achieve center positioning. The conveyor table 11 drives the pipe to move and is transported smoothly with the assistance of the guide roller 18.

[0065] S2: The electric push rod 13 pushes the laser cutting head 14 downward to emit a laser beam to cut the pipe. The inner ring 16 keeps the clamp stable to avoid vibration affecting the accuracy. After the cutting is completed, the laser cutting head 14 is reset.

[0066] S3: The threaded rod 22 drives the vertical plate 21 to move, the second electric telescopic rod 23 pushes the hollow disc 24 and the jet nozzle 26 into the pipeline, the air guide pipe 27 delivers air to the hollow disc 24, and the air is sprayed out from the jet nozzle 26 through the air cylinder 25 to blow away debris. When the inner cylinder 31 slides within the air cylinder 25, the relative position of the air hole 32 on it and the adjusting plug 33 inside the air cylinder 25 changes, thereby realizing the precise adjustment of the spray speed of the gas sprayed from the jet nozzle 26. The inner clamping component 6 clamps the pipeline from the inside to prevent shaking, and the reset component 4 resets the auxiliary components.

[0067] S4: Gas from the gas guide pipe 27 enters the cylinder 81 of the push assembly 8 through the bend pipe 87, pushing the piston disc 84 to drive the moving rod 83 to slide, causing the guide plate 71 to rotate. When the gas pressure decreases, the push spring 85 is reset, and the guide plate 71 returns to its original position. After cutting, the pipe and debris fall into the receiving box 15 through the guide plate 71.

[0068] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A fixed-length laser cutting device for metal pipe assembly, comprising a side plate (1), a conveyor table (11) on the side plate (1), a base (12) at the bottom of the side plate (1), an electric push rod (13) at the top of the side plate (1), a laser cutting head (14) at the output end of the electric push rod (13), two receiving boxes (15) symmetrically distributed on the base (12), an inner ring (16) on the side plate (1), a plurality of first electric telescopic rods (17) arranged in a ring array on the inner ring (16), and a guide roller (18) at the output end of the first electric telescopic rods (17), characterized in that, It also includes a cleaning unit disposed on the side panel (1); The cleaning unit includes a cleaning component and a guiding component disposed on the base (12). The cleaning component includes a cleaning assembly (2) disposed on the base (12). An adjustment assembly (3) is disposed on the cleaning assembly (2). A reset assembly (4) is disposed on the adjustment assembly (3). A stretching assembly (5) is disposed on the reset assembly (4). An inner clamping assembly (6) is also disposed on the cleaning assembly (2). The cleaning component is used to clean the debris inside the cut metal pipe, and the feeding component is used to discharge the cut metal pipe and debris separately. The cleaning component (2) includes a slide groove on the base (12), a vertical plate (21) is provided inside the slide groove, and a threaded rod (22) is also provided inside the slide groove. The vertical plate (21) and the threaded rod (22) are threaded together. A second electric telescopic rod (23) is provided on the vertical plate (21). The output end of the second electric telescopic rod (23) passes through the vertical plate (21) and is provided with a hollow disc (24). Multiple air cylinders (25) are arranged in a ring array on the hollow disc (24). Air nozzles (26) are provided on the air cylinders (25). An air guide pipe (27) is provided on the vertical plate (21). The air guide pipe (27) is connected to the inside of the hollow disc (24). The adjustment component (3) includes an inner cylinder (31) disposed inside the air cylinder (25), an air hole (32) is provided on the inner cylinder (31), and multiple adjustment plugs (33) are provided inside the air cylinder (25), with the diameter of the multiple adjustment plugs (33) gradually increasing towards the side away from the air hole (32).

2. The metal pipe length-fixed laser cutting device for pipe butt assembly according to claim 1, characterized in that, The reset assembly (4) includes a reset ring (41) disposed on the inner cylinder (31), a guide groove is provided inside the air cylinder (25), a guide block (42) is provided inside the guide groove, a reset spring (43) is provided between the guide block (42) and the inner wall of the guide groove, and the reset ring (41) is in a sealed sliding connection with the inner side of the air cylinder (25).

3. The metal pipe length-fixed laser cutting device for pipe butt assembly according to claim 2, characterized in that, The tensioning assembly (5) includes a steel wire rope (51) set on the reset ring (41), a guide post (52) set inside the hollow disc (24), a guide wheel set on the guide post (52), the steel wire rope (51) and the guide wheel are connected in a rolling manner, and the end of the steel wire rope (51) away from the reset ring (41) passes through the hollow disc (24) and is fixedly connected to the upright plate (21).

4. The metal pipe length-fixed laser cutting device for pipe butt assembly according to claim 3, characterized in that, The inner clamping assembly (6) includes a fixed plate (61) set on the upright plate (21), a second electric telescopic rod (23), an air duct (27) and a steel wire rope (51) are all connected through the fixed plate (61), and a plurality of third electric telescopic rods (62) are arranged in a ring array on the fixed plate (61), and a ball (63) is provided at the output end of the third electric telescopic rod (62).

5. The metal pipe length-fixed laser cutting device for pipe butt assembly according to claim 4, characterized in that, The material guiding component includes a material guiding assembly (7) disposed on the side plate (1) and a pushing assembly (8) disposed on the base (12). The material guiding assembly (7) includes a material guiding plate (71) disposed on a side plate (1), a cylinder (72) disposed on the material guiding plate (71), and a threaded groove disposed on the cylinder (72).

6. The metal pipe length-fixed laser cutting device for pipe butt assembly according to claim 5, characterized in that, The pushing assembly (8) includes a cylinder (81) mounted on a base (12), a movable plate (82) mounted on the cylinder (81), a movable rod (83) mounted on the movable plate (82), the movable rod (83) being slidably connected to the inner side of the threaded groove, a piston disc (84) mounted on the inner side of the cylinder (81), a pushing spring (85) being mounted between the piston disc (84) and the inner wall of the cylinder (81), an L-shaped rod (86) mounted on the piston disc (84), the L-shaped rod (86) being slidably connected to the cylinder (81), the L-shaped rod (86) being fixedly connected to the movable plate (82), and a bent pipe (87) mounted on the cylinder (81), the end of the bent pipe (87) away from the cylinder (81) being fixedly connected to the air guide pipe (27).

7. The metal pipe length-fixed laser cutting device for pipe butt assembly according to claim 6, characterized in that, It also includes a transmission assembly (9) disposed on the conveyor table (11), the transmission assembly (9) including a plurality of inclined plates (91) disposed symmetrically in the conveyor table (11), and a plurality of transmission rollers (92) disposed symmetrically on the inclined plates (91).

8. A method for laser cutting metal pipes of fixed length for pipe butt assembly, applied to the laser cutting device for laser cutting metal pipes of fixed length for pipe butt assembly as described in claim 6, characterized in that, Includes the following steps: S1: The operator places the metal pipe on the conveyor table (11), and sends one end into the inner ring (16). The first electric telescopic rod (17) of the inner ring (16) pushes the guide roller (18) to clamp the pipe and achieve center positioning. The conveyor table (11) drives the pipe to move and is transported smoothly with the assistance of the guide roller (18). S2: The electric push rod (13) pushes the laser cutting head (14) down to emit a laser beam to cut the pipe. The inner ring (16) keeps the clamping stable to avoid vibration affecting the accuracy. After the cutting is completed, the laser cutting head (14) is reset. S3: The threaded rod (22) drives the vertical plate (21) to move, the second electric telescopic rod (23) pushes the hollow plate (24) and the jet nozzle (26) into the pipeline, the air pipe (27) delivers air to the hollow plate (24), and the air is sprayed out from the jet nozzle (26) through the air cylinder (25) to blow away debris, the adjusting component (3) adjusts the spray speed, the inner clamping component (6) clamps the pipeline from the inside to prevent shaking, and the reset component (4) resets the auxiliary components; S4: Gas from the gas pipe (27) enters the cylinder (81) of the push assembly (8) through the bend (87), pushing the piston disc (84) to drive the moving rod (83) to slide, causing the guide plate (71) to rotate. When the gas pressure decreases, the push spring (85) resets, and the guide plate (71) returns to its original position. After cutting, the pipe and debris fall into the receiving box (15) through the guide plate (71).

9. The method for fixed-length laser cutting of metal pipes for pipe butt assembly according to claim 8, characterized in that, In S3, when the inner cylinder (31) slides within the air cylinder (25), the relative position of the air hole (32) on it and the adjusting plug (33) inside the air cylinder (25) changes, thereby achieving precise adjustment of the gas spray speed of the jet nozzle (26).

Images