Pipe fitting laser welding machine and using method thereof

Abstract

The invention relates to a laser welding machine, belongs to the technical field of laser welding, and particularly relates to a pipe fitting laser welding machine and a using method thereof.The pipe fitting laser welding machine comprises a welding device body, a fixing rod is fixedly installed on the top wall face of the welding device body, and a laser welding head body is fixedly installed on the top wall face of the fixing rod; two clamping assemblies are arranged in the limiting frame, and a transmission assembly is arranged outside the welding device body. According to the laser welding device, positioning of a pipe fitting is completed through the clamping assembly, through cooperation of the transmission assembly, the clamping assembly can rotate by a circle every time the limiting frame rotates by 90 degrees, when the limiting frame rotates by 90 degrees, the pipe fitting can be sequentially aligned with the laser welding head body, the draught fan and the discharging position, and when the clamping assembly can rotate by a circle, the pipe fitting can be clamped by the draught fan. Therefore, the laser welding head body can be used for welding a circle around the fitting position of the pipe fitting, the fan can be used for uniformly dissipating heat of the pipe fitting, and the effect of automatically welding the pipe fitting is achieved; the problems that an existing welding mode is scattered in working procedure and low in efficiency are solved.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and in particular to a laser welding machine for pipe fittings and its method of use. Background Technology

[0002] In the field of laser welding technology, efficient and high-quality welding of pipe fittings has always been a crucial aspect of industrial manufacturing. Currently, most common laser welding equipment for pipe fittings employs a fixed-station welding method, where the pipe fittings are positioned manually or using simple clamps, and then butt-welded by a laser welding head. However, this type of equipment still has several shortcomings in practical use: First, in traditional welding processes, the clamping, alignment, welding, and cooling of pipe fittings typically need to be performed in separate steps. This is not only cumbersome and inefficient, but also requires highly skilled operators. Second, the pipe fittings are often stationary during welding, while the laser welding head needs to move in a circular motion around them. This increases the complexity of the equipment structure and the difficulty of motion control, while also limiting the improvement of welding speed and consistency. Furthermore, if the high-temperature pipe fittings are not cooled evenly and promptly after welding, it not only affects the properties of the weld microstructure but also poses a risk of burns to operators. This usually requires additional cooling stations or reliance on natural cooling, further reducing the production cycle time. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a pipe laser welding machine and its usage method. The machine uses a clamping assembly to position the pipe. Through the cooperation of the transmission assembly, the clamping assembly rotates one full circle for every 90-degree rotation of the limiting frame. When the limiting frame rotates 90 degrees, the pipe aligns sequentially with the laser welding head body, the fan, and the discharge position. As the clamping assembly rotates one full circle, the laser welding head body can weld around the fitting area of ​​the pipe. The fan provides uniform heat dissipation to the pipe, achieving automated pipe welding.

[0004] The technical solution to achieve the purpose of this invention is as follows: a pipe fitting laser welding machine, comprising a welding device body, a fixing rod fixedly installed on the top wall of the welding device body, a laser welding head body fixedly installed on the top wall of the fixing rod, a fan fixedly installed on the side wall of the welding device body, and a positioning component fixedly installed on the side wall of the welding device body, the positioning component comprising: The rotating frame consists of two rotating frames, which are fixedly installed on the left and right side walls of the welding device body. A limit frame is provided on the side wall of the two rotating frames that are close to each other. A rotating shaft is rotatably installed on the side wall of the limit frame and installed inside the adjacent rotating frame. Four processing grooves are equidistantly opened on the side wall of the limit frame. The limiting frame has two clamping assemblies inside, located on the left and right sides of the inside of the limiting frame, respectively. The clamping assemblies include: The limiting rods consist of four rods, which are circumferentially and rotatably mounted on the inner side wall of the limiting frame. Push rods are slidably mounted on the side wall of the limiting rods, and clamping cones are fixedly mounted on the side wall of the push rods away from the limiting rods. A transmission assembly is provided on the outside of the welding device body. The transmission assembly includes: The gear slot is formed on the side wall of the limiting frame. The drive gear is rotatably installed inside the gear slot. The teeth on the side wall of the drive gear are distributed in four equal parts of the circumference. The center of the drive gear is fixedly connected to a nearby rotating shaft.

[0005] In some embodiments, the positioning component further includes: A drive motor is provided, which is located outside the welding device body. A gearbox is fixedly mounted on the output shaft of the drive motor. The gearbox is fixedly mounted on the side wall of the rotating frame, and the output end of the gearbox is fixedly connected to a nearby rotating shaft.

[0006] In some embodiments, the transmission assembly further includes: The gear rings are multiple in number and are circumferentially fixedly mounted on the inner wall of the gear slot. Four circumferentially equidistant transmission gears are rotatably mounted on the inner wall of the gear slot. The four transmission gears mesh with the gear rings and the drive gear plate. Four transmission gears are circumferentially equidistantly rotatably mounted on the inner wall of the gear slot. All four transmission gears mesh with the drive gear plate. Four driven gears are rotatably mounted on the inner wall of the gear slot. The four driven gears mesh with the four transmission gears respectively. The driven gears rotate through the side wall of the limiting frame and are fixedly connected to the adjacent limiting rod.

[0007] In some embodiments, a limiting plate is fixedly installed on the side wall of the push rod, the limiting plate is slidably installed inside the limiting rod, and a positioning spring is fixedly connected to the side wall of the limiting plate away from the push rod.

[0008] In some embodiments, the clamping assembly further includes: The rotating disk has four rotating disks, which are respectively threaded onto the side walls of four limiting rods. The side walls of the limiting rods are provided with partition grooves. A sliding disk is slidably installed inside the limiting rod. The side walls of the sliding disks are provided with positioning grooves. The sliding disks are slidably fitted onto the side walls of the limiting rods through the cooperation of the positioning grooves and partition grooves. The sliding disks are rotatably installed inside the rotating disks.

[0009] In some embodiments, two sets of sliding components are provided on the side wall of the limiting frame, and the two sets of sliding components are distributed in a mirror image on both sides of the limiting frame. The sliding components include: The through slot is opened on the side wall of the limiting frame. The inner side wall of the through slot is provided with a moving slot. A contact rod is slidably installed inside the through slot. The contact rod is in the shape of a "U". Guide balls are fixedly installed at both ends of the top of the contact rod. Return springs are sleeved at both ends of the contact rod. The return springs are located between the guide balls and the side wall of the limiting frame. There are two fixing plates, which are fixedly installed on the inner side wall of the limiting frame. The side wall of the fixing plate is provided with a limiting groove, which is aligned with the contact rod. A guide rod is fixedly installed on the side wall of the contact rod. The guide rod is slidably installed inside the moving groove and is located between the two fixing plates. A guide groove is provided on the side wall of the guide rod.

[0010] In some embodiments, a partition component is provided inside the guide groove, the partition component including: A rotating rod is rotatably mounted on the side walls of two adjacent fixed plates. A positioning plate is fixedly mounted on the side wall of the rotating rod. The rotating rod is located inside the guide groove, and the positioning plate is aligned with the position of the laser welding head body. There are two positioning rods, which are fixedly installed on the side walls of the positioning plate and the fixing plate, respectively. A rotating sleeve is fitted on the side wall of each positioning rod, and a retraction spring is fixedly connected to the side wall of the two rotating sleeves that are close to each other.

[0011] In some embodiments, two guide assemblies are fixedly installed on the side wall of the welding device body. The two guide assemblies are respectively aligned with two guide balls on the sliding assembly. The guide assemblies include: A fixing frame is fixedly installed on the side wall of the welding device body. A guide arc plate is fixedly connected to the inner side wall of the fixing frame. The inner side wall of the guide arc plate is arc-shaped, and the radius of the inner side wall of the guide arc plate is smaller as it gets closer to the welding device body. The reinforcing plates are multiple in number, and all reinforcing plates are fixedly installed on the inner side wall of the fixing frame. The end of the reinforcing plate away from the fixing frame is fixedly installed on the side wall of the guide arc plate.

[0012] In some embodiments, four clamping components are provided on the side wall of the limiting frame, and the four limiting components are circumferentially distributed at equal intervals on the side wall of the limiting frame. The limiting components include: The fixing groove has multiple fixing grooves, which are respectively opened on the inner sidewall of the adjacent processing groove. A receiving rod is fixedly installed on the inner sidewall of the fixing groove. An extension rod is slidably installed inside the receiving rod. A clamping rod is provided on the end of the extension rod away from the receiving rod. Two adjacent clamping rods are clamped on the sidewall of the pipe. A compression spring is provided inside the receiving rod. The compression spring is fixedly connected to the sidewall of the extension rod. The movable ball is fixedly installed on the side wall of the extension rod, and a rubber pad is fitted on the side wall of the movable ball. The movable ball is rotatably installed on the side wall of the compression spring.

[0013] A method for using a laser welding machine for pipe fittings includes the following steps: Step 1: Place the two pipe fittings on the side walls of the two oppositely distributed clamping assemblies, and clamp the two pipe fittings together using the clamping assemblies; Step 2: The output of the drive motor drives the gearbox, which transmits power to the side wall of the adjacent rotating shaft. Through the cooperation of the transmission components, the limit frame stops for a period of time every 90 degrees of rotation. At this time, the clamping components drive the pipe to rotate one revolution. The first 90-degree rotation of the limit frame aligns the pipe with the laser welding head body, allowing the laser welding head body to weld around the joint of the pipe. The second 90-degree rotation of the limit frame aligns the pipe with the fan. The rotation of the pipe allows the fan to evenly dissipate heat from the surface of the pipe. The third 90-degree rotation of the limit frame positions the pipe away from the welding device body, making it easy to remove the welded pipe. The fourth 90-degree rotation of the limit frame returns it to its original position. At this time, other pipes that need to be welded can be placed between the two clamping components to complete the automatic welding of the pipes.

[0014] The significant advantages of this invention compared to existing technologies are: Firstly, this invention involves placing two pipe fittings to be welded on the sidewalls of two corresponding clamping cones. The elasticity of a positioning spring pushes a push rod outward, causing the two pipe fittings to come into contact, thus positioning them. The output end of the gearbox is fixedly connected to a nearby rotating shaft, allowing the drive motor to rotate the shaft. The rotating shaft is fixedly connected to a drive gear, causing the drive gear to rotate synchronously with the shaft. The teeth on the sidewall of the drive gear are divided into four equal parts. Since the first transmission gear meshes with the internal gear ring, when the drive gear meshes with the first transmission gear, the limiting frame rotates 90 degrees, aligning the pipe fitting with the laser welding head body. The laser welding head then welds the two pipe fittings together. Because the output end of the drive motor rotates continuously, and due to the four-part teeth on the sidewall of the drive gear, when the drive gear is misaligned with the first transmission gear, it meshes with the second transmission gear. The second transmission gear meshes with the driven gear, which is fixedly mounted on the side of the limiting rod. The limit rod rotates on the wall, causing the pipe to rotate. Through the gear ratio of the second transmission gear and the driven gear, the limit rod rotates one revolution before the drive gear and the second transmission gear are misaligned. This allows the laser welding head to weld around the joint of the pipe. When the drive gear and the second transmission gear are misaligned, the drive gear engages with the first transmission gear, causing the limit rod to rotate another 90 degrees. The welded pipe is then aligned with the fan. The fan cools the weld area. The pipe rotates one revolution under the action of the drive gear and the second transmission gear, allowing the fan to dissipate heat evenly. As the drive motor output rotates, the drive gear engages with the first transmission gear again. After cooling, the pipe rotates another 90 degrees, at which point the welded pipe can be removed, completing the automatic welding process. Simultaneously, automatic cooling prevents the pipe from overheating and potentially burning workers. This solves the problems of fragmented processes and low efficiency in existing welding methods.

[0015] Secondly, this invention utilizes the elasticity of the positioning spring to push the positioning spring and the push rod outward, thereby moving the clamping cone and enabling the two clamping components to clamp the two pipes that need to be welded, facilitating the fixation of the pipes.

[0016] Thirdly, in this invention, when the clamping cone abuts against the pipe fitting, the pipe fitting will fit against the side wall of the positioning plate. Since the positioning plate is aligned with the laser welding head body, the position of the pipe fitting can be restricted, ensuring that the welding joint of the two pipe fittings is aligned with the laser welding head body. This avoids the situation where the welding position is misaligned with the laser welding head body due to the different lengths of the two pipe fittings. Since the rotating disk is threaded on the side wall of the limiting rod, the position of the sliding disk can be adjusted by rotating the rotating disk, and the extension distance of the clamping cone can be adjusted according to the length of the pipe fitting, further ensuring that the welding position is aligned with the laser welding head body. After the pipe fitting is placed, since the guide arc plate is aligned with the guide ball, when the limiting frame rotates, the guide ball can contact the side wall of the guide arc plate. The side wall of the guide arc plate abuts against the guide ball, causing the guide ball to slide along the inside of the groove. The inner side wall of the guide groove therefore abuts against the side wall of the positioning plate, causing the positioning plate to rotate around the rotating rod. The positioning plate then disengages from the two pipe fittings, allowing them to fit together and facilitating welding by the laser welding head. The positioning plate then returns to the adjacent processing slot. As the limiting frame continues to rotate, the positioning plate revolves around the rotating rod, while the inner wall of the guide arc plate continuously pushes the guide ball. The guide slot holds the rotating rod inside, resulting in a horizontally positioned positioning plate. When the limiting frame continues to rotate 90 degrees, the rotating rod disengages from the guide slot and, under the pull of the compression spring, the positioning plate continues to rotate around the rotating rod, pressing against the side wall of the cooled pipe fitting. Because the clamping cone is cone-shaped, the pressure from the positioning plate causes it to move away from the pipe fitting, pushing the pipe fitting out between the two clamping cones. After the pipe fitting falls, the positioning plate, rotating around the rotating rod, remains between the two clamping cones and maintains a stable position under the constraint of the guide slot, thus achieving automatic pipe fitting unloading.

[0017] Fourthly, this invention utilizes the elasticity of the compression springs to push the extension rod outward, allowing two adjacent compression springs to clamp onto the side wall of the pipe, thus limiting the position of the pipe and ensuring its stability. This prevents the pipe from shifting and failing to fit when the positioning plate detaches from the side wall of the two adjacent pipes. The compression springs are rotatably mounted on the side wall of the extension rod via a movable ball, and the rubber pad on the side wall of the movable ball facilitates adjustment of the angle of the clamping rods, enabling the two clamping rods to clamp the pipe while also facilitating the outward pushing of the pipe. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the welding device body of the present invention; Figure 3 This is a three-dimensional schematic diagram of the overall structure of the limiting frame of the present invention; Figure 4 This is a schematic diagram of the internal structure of the gear groove of the present invention; Figure 5 This is a schematic diagram of the internal structure of the limiting rod of the present invention; Figure 6 This is a three-dimensional schematic diagram of the overall structure of the contact rod of the present invention; Figure 7 This is a three-dimensional schematic diagram of the overall structure of the guide rod of the present invention; Figure 8 This is a three-dimensional schematic diagram of the internal structure of the receiving rod of the present invention; Figure 9 This is a schematic diagram showing the distribution of the separator components of the present invention at different locations; Figure 10 This is a schematic diagram showing the position of the positioning plate of the present invention after it has been rotated 90 degrees.

[0019] Explanation of reference numerals in the attached figures: 11. Welding device body; 12. Fixing rod; 13. Laser welding head body; 14. Fan; 21. Rotating frame; 22. Drive motor; 23. Gearbox; 24. Limiting frame; 25. Rotating shaft; 26. Machining groove; 31. Gear groove; 32. Internal gear ring; 33. Drive gear disc; 34. Transmission gear one; 35. Transmission gear two; 36. Driven gear; 41. Limiting rod; 42. Pushing rod; 43. Clamping cone; 44. Limiting plate; 45. Positioning spring; 46. Sliding plate; 47. Positioning groove; 48. 49. Dividing groove; 51. Rotating disk; 52. Fixing groove; 53. Receiving rod; 54. Extension rod; 55. Clamping rod; 56. Movable ball; 67. Compression spring; 68. Through groove; 69. Moving groove; 60. Contact rod; 61. Guide ball; 62. Return spring; 63. Fixing plate; 64. Limiting groove; 65. Guide rod; 66. Guide groove; 77. Positioning plate; 78. Rotating rod; 79. Positioning rod; 70. Rotating sleeve; 81. Contraction spring; 82. Fixing frame; 83. Guide arc plate; 84. Reinforcing plate. Detailed Implementation

[0020] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides an improved laser welding machine for pipe fittings and its method of use. The technical solution of this invention is as follows: Example

[0022] like Figures 1-5As shown, a pipe fitting laser welding machine includes a welding device body 11, a fixing rod 12 fixedly installed on the top wall of the welding device body 11, a laser welding head body 13 fixedly installed on the top wall of the fixing rod 12, the laser welding head body 13 being electrically connected to the welding device body 11, a fan 14 fixedly installed on the side wall of the welding device body 11, and a positioning assembly fixedly installed on the side wall of the welding device body 11, the positioning assembly including a rotating frame 21 and a drive motor 22. There are two rotating frames 21. The two rotating frames 21 are fixedly installed on the left and right side walls of the welding device body 11 respectively. A limit frame 24 is provided on the side wall of the two rotating frames 21 that are close to each other. A rotating shaft 25 is rotatably installed on the side wall of the limit frame 24. The rotating shaft 25 is installed inside the adjacent rotating frames 21. Four processing grooves 26 are equidistantly opened on the side wall of the limit frame 24. The drive motor 22 is located outside the welding device body 11. A gearbox 23 is fixedly mounted on the output shaft of the drive motor 22. The gearbox 23 is fixedly mounted on the side wall of the rotating frame 21. The output end of the gearbox 23 is fixedly connected to the nearby rotating shaft 25. The limiting frame 24 has two clamping components inside, which are respectively located on the left and right sides inside the limiting frame 24. The clamping components include a limiting rod 41 and a rotating disk 49. There are four limiting rods 41, which are circumferentially and rotatably mounted on the inner side wall of the limiting frame 24. Push rods 42 are slidably mounted on the side wall of the limiting rods 41. A clamping cone 43 is fixedly mounted on the side wall of the push rod 42 away from the limiting rods 41. A limiting plate 44 is fixedly mounted on the side wall of the push rod 42 and slidably mounted inside the limiting rods 41. A positioning spring 45 is fixedly connected to the side wall of the limiting plate 44 away from the push rods 42. By utilizing the elasticity of the positioning spring 45, the positioning spring 45 and the push rod 42 are pushed outward, and the clamping cone 43 moves accordingly, so that the two clamping components can clamp the two pipes that need to be welded, which facilitates the fixation of the pipes. There are four rotating disks 49. The four rotating disks 49 are respectively threaded onto the side walls of the four limiting rods 41. The side walls of the limiting rods 41 are provided with partition grooves 48. A sliding disk 46 is slidably installed inside the limiting rods 41. The side walls of the sliding disk 46 are provided with positioning grooves 47. The sliding disk 46 is slidably sleeved on the side walls of the limiting rods 41 through the mutual cooperation of the positioning grooves 47 and the partition grooves 48. The sliding disk 46 is rotatably installed inside the rotating disks 49. The welding device body 11 is provided with a transmission component on its exterior, which includes a gear groove 31 and an internal gear ring 32. The gear groove 31 is formed on the side wall of the limit frame 24. The drive gear 33 is rotatably installed inside the gear groove 31. The teeth on the side wall of the drive gear 33 are distributed in four equal parts of the circumference at equal intervals. The center position of the drive gear 33 is fixedly connected to the nearby rotating shaft 25. There are multiple internal gear rings 32, which are circumferentially fixedly installed on the inner wall of the gear groove 31. Four circumferentially equidistant transmission gears 34 are rotatably installed on the inner wall of the gear groove 31, meshing with the internal gear rings 32 and the drive gear disk 33. Four circumferentially equidistant transmission gears 35 are rotatably installed on the inner wall of the gear groove 31, all meshing with the drive gear disk 33. Four driven gears 36 are rotatably installed on the inner wall of the gear groove 31, meshing with the four transmission gears 35 respectively. The driven gears 36 rotatably penetrate the side wall of the limiting frame 24 and are fixedly connected to the adjacent limiting rod 41. The two pipe fittings to be welded are placed on two... On the side wall of the corresponding clamping cone 43, the elasticity of the positioning spring 45 pushes the push rod 42 outward, causing the two pipes to fit together and completing the positioning of the pipes. By fixing the output end of the gearbox 23 to the adjacent rotating shaft 25, the drive motor 22 can drive the adjacent rotating shaft 25 to rotate when it works. The rotating shaft 25 is fixedly connected to the drive gear 33, so the drive gear 33 rotates synchronously with the rotating shaft 25. The teeth on the side wall of the drive gear 33 are divided into four equal parts. Since the transmission gear 34 meshes with the internal gear ring 32, when the drive gear 33 meshes with the transmission gear 34, the limit frame 24 will rotate ninety degrees, aligning the pipe with the laser welding head body 13. The main body 13 works by welding two pipe fittings together. Since the output of the drive motor 22 rotates continuously, and due to the four equally spaced teeth on the side wall of the drive gear 33, when the drive gear 33 is misaligned with the first transmission gear 34, the drive gear 33 will mesh with the second transmission gear 35. The second transmission gear 35 meshes with the driven gear 36, which is fixedly mounted on the side wall of the limiting rod 41. Therefore, the limiting rod 41 will rotate, causing the pipe fittings to rotate. Through the gear ratio of the second transmission gear 35 and the driven gear 36, the limiting rod 41 can rotate one revolution before the drive gear 33 and the second transmission gear 35 are misaligned. Thus, the laser welding head 13 can weld around the joint of the pipe fittings. When the drive gear 33 and... When the second transmission gear 35 is disengaged, the drive gear 33 then meshes with the first transmission gear 34, causing the limit frame 24 to continue rotating 90 degrees. The welded pipe is then aligned with the fan 14. The fan 14 cools the welded area. The pipe rotates one revolution under the cooperation of the drive gear 33 and the second transmission gear 35, allowing the fan 14 to dissipate heat evenly. As the output of the drive motor 22 rotates, the drive gear 33 meshes with the first transmission gear 34 again. After cooling, the pipe rotates 90 degrees again. At this point, the welded pipe can be removed, completing the automatic welding of the pipe. Simultaneously, the automatic cooling of the pipe prevents the pipe from overheating and potentially burning workers.

[0023] like Figures 1-10As shown, in one embodiment, two sets of sliding components are provided on the side wall of the limiting frame 24. The two sets of sliding components are distributed in a mirror image on both sides of the limiting frame 24. The sliding components include a through groove 61 and a fixing plate 66. A through groove 61 is formed on the side wall of the limiting frame 24. A moving groove 62 is formed on the inner side wall of the through groove 61. A contact rod 63 is slidably installed inside the through groove 61. The contact rod 63 is U-shaped. Guide balls 64 are fixedly installed at both ends of the top of the contact rod 63. A return spring 65 is sleeved at both ends of the contact rod 63. The return spring 65 is located between the guide ball 64 and the side wall of the limiting frame 24. There are two fixing plates 66. The two fixing plates 66 are fixedly installed on the inner side wall of the limiting frame 24. The side wall of the fixing plate 66 is provided with a limiting groove 67, which is aligned with the contact rod 63. A guide rod 68 is fixedly installed on the side wall of the contact rod 63. The guide rod 68 is slidably installed inside the moving groove 62 and is located between the two fixing plates 66. A guide groove 69 is provided on the side wall of the guide rod 68. The guide groove 69 is provided with a partition assembly, which includes a rotating rod 72 and a positioning rod 73. The rotating rod 72 is rotatably mounted on the side walls of two adjacent fixed plates 66. A positioning plate 71 is fixedly mounted on the side wall of the rotating rod 72. The rotating rod 72 is located inside the guide groove 69. The positioning plate 71 is aligned with the position of the laser welding head body 13. There are two positioning rods 73. The two positioning rods 73 are fixedly installed on the side walls of the positioning plate 71 and the fixing plate 66 respectively. A rotating sleeve 77 is fitted on the side wall of each positioning rod 73. A retraction spring 78 is fixedly connected to the side wall of the two rotating sleeves 77 that are close to each other. Two guide components are fixedly installed on the side wall of the welding device body 11. The two guide components are respectively aligned with the two guide balls 64 on the sliding component. The guide components include a fixing frame 81 and a reinforcing plate 83. The fixing bracket 81 is fixedly installed on the side wall of the welding device body 11. A guide arc plate 82 is fixedly connected to the inner side wall of the fixing bracket 81. The inner side wall of the guide arc plate 82 is arc-shaped, and the radius of the inner side wall of the guide arc plate 82 decreases as it approaches the welding device body 11. When the clamping cone 43 abuts against the pipe, the pipe will fit against the side wall of the positioning plate 71. Since the positioning plate 71 is aligned with the laser welding head body 13, the position of the pipe can be restricted, so that the welding joint of the two pipes can be aligned with the laser welding head body 13, avoiding welding problems caused by the different lengths of the two pipes. If the position is misaligned with the laser welding head body 13, the rotating disk 49 is threaded onto the side wall of the limiting rod 41. By rotating the rotating disk 49, the position of the sliding disk 46 is adjusted, and the extension distance of the clamping cone 43 is adjusted according to the length of the pipe fitting. This further ensures that the welding position is aligned with the laser welding head body 13. After the pipe fitting is placed, since the guide arc plate 82 is aligned with the guide ball 64, when the limiting frame 24 rotates, the guide ball 64 can contact the side wall of the guide arc plate 82. The side wall of the guide arc plate 82 abuts against the guide ball 64, causing the guide ball 64 to move along the inner groove 61. As the guide groove 69 slides, its inner wall abuts against the side wall of the positioning plate 71, causing the positioning plate 71 to rotate around the rotating rod 72. The positioning plate 71 then disengages from between the two pipe fittings, which are now in contact, facilitating welding of the pipe fittings by the laser welding head body 13. The positioning plate 71 then returns to the interior of the adjacent processing groove 26. As the limiting frame 24 continues to rotate, the positioning plate 71 rotates around the rotating rod 72, while the inner wall of the guide arc plate 82 continuously pushes the guide ball 64 to move. The guide groove 69 holds the rotating rod 72 within it, thus the positioning plate 71 is horizontally positioned. When the limiting frame 24... When the rotation continues to rotate 90 degrees, the rotating rod 72 disengages from the inside of the guide groove 69, and under the pull of the compression spring 78, the positioning plate 71 continues to rotate around the rotating rod 72 and presses against the side wall of the cooled pipe. Since the clamping cone 43 is cone-shaped, the pressing of the positioning plate 71 causes the clamping cone 43 to move away from the pipe. The pipe is thus pushed out between the two clamping cones 43. After the pipe falls, the positioning plate 71 rotates around the rotating rod 72 and is located between the two clamping cones 43. Under the restriction of the guide groove 69, it maintains a stable position, thus completing the automatic unloading of the pipe. There are multiple reinforcing plates 83, and all reinforcing plates 83 are fixedly installed on the inner side wall of the fixing frame 81. The end of the reinforcing plate 83 away from the fixing frame 81 is fixedly installed on the side wall of the guide arc plate 82. The position of the guide arc plate 82 is reinforced by the reinforcing plates 83 to ensure the stability of the position of the guide arc plate 82.

[0024] like Figures 1-8As shown, in one embodiment, four clamping components are provided on the side wall of the limiting frame 24. The four limiting components are circumferentially distributed on the side wall of the limiting frame 24. The limiting components include a fixed groove 51 and a movable ball 55. There are multiple fixing grooves 51, which are respectively opened on the inner sidewall of adjacent processing grooves 26. A receiving rod 52 is fixedly installed on the inner sidewall of the fixing groove 51. An extension rod 53 is slidably installed inside the receiving rod 52. A clamping rod 54 is provided at the end of the extension rod 53 away from the receiving rod 52. Two adjacent clamping rods 54 are clamped on the sidewall of the pipe fitting. A compression spring 56 is provided inside the receiving rod 52. The compression spring 56 is fixedly connected to the sidewall of the extension rod 53. By utilizing the elasticity of the compression spring 56, the extension rod 53 is pushed outward, so that the two adjacent compression springs 56 can be clamped on the sidewall of the pipe fitting, thereby limiting the position of the pipe fitting, ensuring the stability of the pipe fitting position, and preventing the pipe fitting position from shifting and failing to fit when the positioning plate 71 detaches from the side wall of the two adjacent pipe fittings. The movable ball 55 is fixedly installed on the side wall of the extension rod 53. A rubber pad is fitted on the side wall of the movable ball 55. The movable ball 55 is rotatably installed on the side wall of the compression spring 56. The compression spring 56 is rotatably installed on the side wall of the extension rod 53 by means of the movable ball 55. The rubber pad on the side wall of the movable ball 55 facilitates the adjustment of the angle of the clamping rod 54, so that the two clamping rods 54 can clamp the pipe and also facilitate the pushing of the pipe outward. Example

[0025] This embodiment discloses a method for using a laser welding machine for pipe fittings, including the following steps: Step 1: Place the two pipe fittings on the side walls of the two oppositely distributed clamping assemblies, and clamp the two pipe fittings together using the clamping assemblies; Step 2: The output of the drive motor 22 drives the gearbox 23 to work. The gearbox 23 transmits power to the side wall of the nearby rotating shaft 25. Through the cooperation of the transmission components, the limit frame 24 stops for a period of time every 90 degrees of rotation. At this time, the clamping components drive the pipe to rotate one revolution. The limit frame 24 rotates 90 degrees for the first time, aligning the pipe with the laser welding head body 13, so that the laser welding head body 13 can weld around the joint of the pipe. The limit frame 24 rotates 90 degrees for the second time, aligning the pipe with the fan 14. Through the rotation of the pipe, the fan 14 can evenly dissipate heat from the surface of the pipe. The limit frame 24 rotates 90 degrees for the third time, and the pipe is located on the side away from the welding device body 11, making it easy to remove the welded pipe. The limit frame 24 rotates 90 degrees for the fourth time and returns to its original position. At this time, other pipes that need to be welded can be placed between the two clamping components to complete the automatic welding of the pipes.

[0026] The specific working method is as follows: Utilizing the elasticity of the positioning spring 45, the positioning spring 45 and the push rod 42 are pushed outwards, causing the clamping cone 43 to move. This allows the two clamping components to clamp the two pipes to be welded, facilitating pipe fixation. The two pipe fittings to be welded are placed on the side walls of two corresponding clamping cones 43, and the elasticity of the positioning spring 45 pushes the push rod 42 outwards, causing the two pipe fittings to fit together, thus completing the pipe fitting positioning. The output end of the gearbox 23 is fixedly connected to a nearby rotating shaft 25, enabling the drive motor 22 to drive the corresponding rotating shaft. The nearest rotating shaft 25 rotates, and the rotating shaft 25 is fixedly connected to the drive gear disk 33. Therefore, the drive gear disk 33 rotates synchronously with the rotating shaft 25. The teeth on the side wall of the drive gear disk 33 are divided into four equal parts. Since the transmission gear 34 meshes with the internal gear ring 32, when the drive gear disk 33 meshes with the transmission gear 34, the limiting frame 24 will rotate 90 degrees, aligning the pipe with the laser welding head body 13. Through the operation of the laser welding head body 13, the two pipes are welded together. Since the output end of the drive motor 22 rotates continuously, and since the drive gear disk 33 has four equal parts on its side wall ... When the drive gear 33 and the transmission gear 35 are misaligned, the drive gear 33 meshes with the transmission gear 35, which in turn meshes with the driven gear 36. The driven gear 36 is fixedly mounted on the side wall of the limiting rod 41, causing the limiting rod 41 to rotate. This causes the pipe to rotate. Through the gear ratio of the transmission gear 35 and the driven gear 36, the limiting rod 41 can rotate one revolution before the drive gear 33 and the transmission gear 35 are misaligned. Therefore, the laser welding head body 13 can weld around the fitting area of ​​the pipe. When the drive gear 33 and the transmission gear 35 are misaligned, the drive gear 33 then meshes with the transmission gear 34, causing the limiting rod 41 to rotate one revolution. The frame 24 continues to rotate 90 degrees, aligning the welded pipe with the fan 14. The fan 14 then cools the welded area. The pipe rotates one revolution under the cooperation of the drive gear 33 and the transmission gear 35, allowing the fan 14 to dissipate heat evenly. As the output of the drive motor 22 rotates, the drive gear 33 meshes with the transmission gear 34 again. After cooling, the pipe rotates another 90 degrees. At this point, the welded pipe can be removed, completing the automatic welding process. Simultaneously, the automatic cooling of the pipe prevents it from overheating and potentially burning workers.

[0027] The technical means disclosed in this invention are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this invention are common knowledge to those skilled in the art.

Claims

1. A laser welding machine for pipe fittings, comprising a welding device body (11), a fixing rod (12) fixedly installed on the top wall of the welding device body (11), a laser welding head body (13) fixedly installed on the top wall of the fixing rod (12), and a fan (14) fixedly installed on the side wall of the welding device body (11), characterized in that: The side wall of the welding device body (11) is fixedly provided with a positioning assembly, which comprises: A rotating frame (21) is provided on the left and right side walls of the welding device body (11), and a limiting frame (24) is provided on the side wall of the rotating frame (21) close to the other rotating frame (21). A rotating shaft (25) is rotatably arranged on the side wall of the limiting frame (24), and the rotating shaft (25) is arranged in the limiting frame (24). Four machining grooves (26) are circumferentially and equidistantly arranged on the side wall of the limiting frame (24). The limiting frame (24) is provided with two clamping assemblies, and the two clamping assemblies are arranged on the left and right sides of the limiting frame (24). The clamping assembly comprises: Four limiting rods (41) are circumferentially and equidistantly rotatably arranged on the inner side wall of the limiting frame (24). A pushing rod (42) is slidably arranged on the side wall of the limiting rod (41). A clamping cone (43) is fixedly arranged on the side wall of the pushing rod (42) away from the limiting rod (41). The welding device body (11) is provided with a transmission assembly, which comprises: A gear groove (31) is arranged on the side wall of the limiting frame (24). A driving gear disc (33) is rotatably arranged in the gear groove (31). The teeth on the side wall of the driving gear disc (33) are circumferentially and equidistantly arranged in four parts. The center of the driving gear disc (33) is fixedly connected with the rotating shaft (25) close to it.

2. A tube laser welding machine according to claim 1, characterized in that: The positioning assembly further comprises: A driving motor (22) is arranged on the outside of the welding device body (11). A gearbox (23) is fixedly arranged on the output shaft of the driving motor (22). The gearbox (23) is fixedly arranged on the side wall of the rotating frame (21). The output end of the gearbox (23) is fixedly connected with the rotating shaft (25) close to it.

3. A tube laser welding machine according to claim 1, characterized in that: The transmission assembly further comprises: A plurality of inner gear rings (32) are circumferentially and equidistantly fixedly arranged on the inner side wall of the gear groove (31). Four circumferentially and equidistantly arranged transmission gears (34) are rotatably arranged on the inner side wall of the gear groove (31). The four transmission gears (34) are meshed with the inner gear ring (32) and the driving gear disc (33). Four transmission gears (35) are circumferentially and equidistantly rotatably arranged on the inner side wall of the gear groove (31). The four transmission gears (35) are meshed with the driving gear disc (33). Four driven gears (36) are rotatably arranged on the inner side wall of the gear groove (31). The four driven gears (36) are respectively meshed with the four transmission gears (35). The driven gear (36) is rotatably arranged through the side wall of the limiting frame (24) and is fixedly connected with the limiting rod (41) close to it.

4. A tube laser welding machine according to claim 1, characterized in that: A limiting disc (44) is fixedly arranged on the side wall of the pushing rod (42). The limiting disc (44) is slidably arranged in the limiting rod (41). The limiting disc (44) is fixedly connected with a positioning spring (45) on the side wall away from the pushing rod (42).

5. A tube laser welding machine according to claim 1, characterized in that: The clamping assembly further comprises: Rotary disc (49), four rotary discs (49) are threadedly installed on the side walls of four limiting rods (41) respectively, a partition groove (48) is formed on the side wall of the limiting rod (41), a sliding disc (46) is slidably installed in the limiting rod (41), a positioning groove (47) is formed on the side wall of the sliding disc (46), the sliding disc (46) is slidably sleeved on the side wall of the limiting rod (41) through the cooperation of the positioning groove (47) and the partition groove (48), and the sliding disc (46) is rotatably installed in the rotary disc (49).

6. A tube laser welding machine according to claim 1, characterized in that: The side wall of the limiting frame (24) is provided with two groups of sliding assemblies, and the two groups of sliding assemblies are mirror image distributed on the two sides of the limiting frame (24). The sliding assembly comprises: A through groove (61) is formed on the side wall of the limiting frame (24), a moving groove (62) is formed on the inner side wall of the through groove (61), a contact rod (63) is slidably installed in the through groove (61), the contact rod (63) is in the shape of "U", guide balls (64) are fixedly installed at the top of both ends of the contact rod (63), reset springs (65) are sleeved on both ends of the contact rod (63), and the reset springs (65) are located between the guide balls (64) and the side wall of the limiting frame (24); Two fixed plates (66) are fixedly installed on the inner side wall of the limiting frame (24), a limiting groove (67) is formed on the side wall of the fixed plate (66), the limiting groove (67) is aligned with the contact rod (63), a guide rod (68) is fixedly installed on the side wall of the contact rod (63), the guide rod (68) is slidably installed in the moving groove (62), the guide rod (68) is located between the two fixed plates (66), and a guide groove (69) is formed on the side wall of the guide rod (68).

7. A tube laser welding machine according to claim 6, characterized in that: The guide groove (69) is provided with a partition assembly, and the partition assembly comprises: A rotating rod (72) is rotatably installed on the side walls of the two adjacent fixed plates (66), a positioning plate (71) is fixedly installed on the side wall of the rotating rod (72), the rotating rod (72) is located in the guide groove (69), and the positioning plate (71) is aligned with the position of the laser welding head body (13); Two positioning rods (73) are fixedly installed on the side walls of the positioning plate (71) and the fixed plate (66), respectively, a rotating sleeve (77) is sleeved on the side wall of each of the two positioning rods (73), and a contraction spring (78) is fixedly connected to the side wall surface of the two rotating sleeves (77) which are adjacent.

8. A tube laser welding machine according to claim 1, characterized in that: Two guide assemblies are fixedly installed on the side wall of the welding device body (11), the two guide assemblies are aligned with the two guide balls (64) on the sliding assembly, and the guide assembly comprises: The fixed frame (81) is fixedly installed on the side wall of the welding device body (11), the inner side wall of the fixed frame (81) is fixedly connected with a guide arc plate (82), the inner side wall of the guide arc plate (82) is in an arc shape, and the inner side wall of the guide arc plate (82) is in a state that the radius thereof is smaller as being closer to one end of the welding device body (11); The reinforcing plates (83) are fixedly installed on the inner side wall of the fixed frame (81), and one end of the reinforcing plate (83) away from the fixed frame (81) is fixedly installed on the side wall of the guide arc plate (82).

9. A tube laser welding machine according to claim 1, characterized in that: The side wall of the limiting frame (24) is provided with four clamping assemblies, the four limiting assemblies are circumferentially and equidistantly distributed on the side wall of the limiting frame (24), and the limiting assembly comprises: The fixed slots (51) are provided with the containing rods (52), the containing rods (52) are slidably installed in the inner side wall of the fixed slots (51), the extension rods (53) are slidably installed in the containing rods (52), the clamping rods (54) are arranged at one end of the extension rods (53) away from the containing rods (52), the two clamping rods (54) are clamped on the side wall of the pipe, the containing rods (52) are provided with the extrusion springs (56), and the extrusion springs (56) are fixedly connected with the side wall of the extension rods (53); The movable ball (55) is fixedly installed on the side wall of the extension rod (53), the side wall of the movable ball (55) is sleeved with a rubber pad, and the movable ball (55) is rotatably installed on the side wall of the extrusion spring (56).

10. A method of using a tube laser welding machine according to any one of claims 1-9, characterized in that: The steps include the following steps: In the first step, two pipe fittings are respectively placed on the side walls of two oppositely distributed clamping assemblies, and the two pipe fittings are clamped by the clamping assemblies; In the second step, the output end of the driving motor (22) drives the gearbox (23) to work, the gearbox (23) drives the power to the side wall of the rotating shaft (25) that is close to the gearbox (23), the transmission assembly is matched, the limiting frame (24) is stopped for a period of time every time it rotates by 90 degrees, at this time, the clamping assembly drives the pipe fitting to rotate by 90 degrees, the limiting frame (24) rotates by 90 degrees for the first time, the pipe fitting is aligned with the laser welding head body (13), the laser welding head body (13) can be welded around the pipe fitting, the limiting frame (24) rotates by 90 degrees for the second time, the pipe fitting is aligned with the fan (14), the fan (14) can uniformly cool the surface of the pipe fitting through the rotation of the pipe fitting, the limiting frame (24) rotates by 90 degrees for the third time, the pipe fitting is located on the side away from the welding device body (11), and the welded pipe fitting can be taken out, and the limiting frame (24) rotates by 90 degrees for the fourth time, and returns to the original position, at this time, other pipe fittings that need to be welded can be placed between the two clamping assemblies, and the automatic welding of the pipe fitting is completed.

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