A self-correcting laser welding device

Abstract

The present application relates to the field of laser welding, especially to a self-correcting laser welding device.The technical problem to be solved is that when welding cylindrical pipes of different sizes and inner and outer diameters, frequent adjustment of equipment and pipe displacement can lead to inaccurate seam correction, affecting the welding quality, increasing the number of adjustments and re-welding, and reducing efficiency.A self-correcting laser welding device includes a housing and the like;two support mechanisms are provided on the housing, and cylindrical pipe one and cylindrical pipe two are placed on the two support mechanisms.The cylindrical pipe one and the cylindrical pipe two are fastened by pressing the disc to ensure accurate contact of the cylindrical pipe one and the cylindrical pipe two with the side wall, which can effectively prevent the relative position deviation of the cylindrical pipe one and the cylindrical pipe two during the welding process, ensure the stability of the cylindrical pipe one and the cylindrical pipe two during the entire welding process, thereby significantly improving the welding precision and quality, avoiding welding defects caused by inaccurate position, and ensuring the firmness of the welding of the cylindrical pipe one and the cylindrical pipe two.

Description

Technical Field

[0001] This invention relates to the field of laser welding, and more particularly to a self-correcting laser welding device. Background Technology

[0002] Laser welding is a method of welding metals or other materials using a laser beam as a heat source. The laser beam has a high energy density and can be concentrated in a very small area to generate extremely high temperatures, thereby achieving localized heating and melting the material for welding.

[0003] When straightening and welding two cylindrical tubes of various inner and outer diameters and different lengths, the tubes of different sizes and inner and outer diameters may require frequent adjustments to the alignment and fixing equipment, which is cumbersome and time-consuming. At the same time, during the fixing process, the two cylindrical tubes are prone to relative displacement, making it difficult to accurately straighten and correct the joint. This not only results in insufficient docking accuracy between the two cylindrical tubes, but may also lead to defects such as uneven welds, porosity, or cracks during the welding process, thereby reducing the welding quality. In addition, due to inaccurate alignment, multiple adjustments and re-welding may be required, which significantly reduces welding efficiency and production pace, and increases operational complexity and cost. Summary of the Invention

[0004] To overcome the drawbacks of frequent equipment and pipe displacement adjustments leading to inaccurate joint alignment, affecting welding quality, increasing the number of adjustments and re-welding, and reducing efficiency when welding cylindrical tubes of different sizes and inner and outer diameters, a self-correcting laser welding device is needed. This device can precisely fix, correct, and adjust cylindrical tubes of different sizes and inner and outer diameters, ensuring accurate joint alignment, reducing welding defects, significantly improving welding efficiency and quality, and ensuring the robustness of the cylindrical tube weld.

[0005] The technical solution of the present invention is as follows: a self-correcting laser welding device includes a housing, two support mechanisms are provided on the housing, cylindrical tube one and cylindrical tube two are respectively placed on the two support mechanisms, and a welding mechanism is provided on the housing for welding cylindrical tube one and cylindrical tube two together.

[0006] Furthermore, the support mechanism includes support frames, with two support frames slidably mounted on the housing. The two support frames are located on both sides of the welding mechanism, and two adjusting bolts are threadedly connected to the housing. The two adjusting bolts are rotatably connected to the two support frames respectively.

[0007] Furthermore, the welding mechanism includes a slide bar, which is slidably mounted on the housing. A sliding frame is fixedly mounted on the slide bar, and an annular slide rail is mounted on the sliding frame. An electric slider is slidably mounted on the annular slide rail, and an electric push rod is mounted on the electric slider. A welding head is mounted on the first telescopic rod of the electric push rod.

[0008] Furthermore, it also includes an alignment mechanism on the housing for aligning cylindrical tube one and cylindrical tube two. The alignment mechanism includes an alignment frame, which is slidably mounted on the housing. A pressing plate is mounted on the upper part of the alignment frame, and the lower part of the alignment frame is open. Two locking blocks are slidably mounted on the lower part of the alignment frame, and the two locking blocks are symmetrically arranged. Two horizontal screws are threadedly connected to the lower part of the alignment frame. A locking gear is installed at the end of the two horizontal screws that are close to each other, and the ends of the two horizontal screws that are far from each other are rotatably connected to the two locking blocks respectively. A bottom rack is slidably mounted on the lower part of the housing. The teeth on the bottom rack mesh with the two locking gears at the same time. A magnet is fixedly mounted on the bottom rack.

[0009] Furthermore, the alignment frame is made of iron, and the magnet is attached to one side of the alignment frame.

[0010] Furthermore, it also includes a drive mechanism mounted on the housing and welding mechanism. The drive mechanism includes an electric push rod. Two hydraulic rods are installed at the top inside the housing. A drive frame is installed between the second telescopic rods of the two hydraulic rods. The two sides of the drive frame are slidably connected to the two side walls inside the housing. The drive frame slides through the middle of the slide bar. Limiting ring one and limiting ring two are installed on the drive frame. The slide bar is located between limiting ring one and limiting ring two. Limiting ring one contacts one side of the slide bar.

[0011] Furthermore, it also includes a pulling mechanism set on the housing, drive frame and bottom rack. A horizontal shaft is rotatably provided inside the housing. A drive gear is fixedly installed in the middle of the horizontal shaft. A main rack is installed at the bottom of the drive frame. A secondary rack is installed on the upper part of the bottom rack. The drive gear is located between the main rack and the secondary rack. Both the main rack and the secondary rack mesh with the drive gear.

[0012] Furthermore, it also includes a correction mechanism mounted on the drive frame for correcting the deviation of cylindrical tube one and cylindrical tube two. The correction mechanism includes a tripod, a tripod mounted on the drive frame, a hollow tube fixedly mounted on the tripod, a rotating cylinder rotatably mounted on the end of the hollow tube away from the tripod, a motor mounted inside the hollow tube near the rotating cylinder, a drive slot mounted on the output shaft of the motor, the drive slot located inside the rotating cylinder, the drive slot having three arc-shaped slots, three telescopic frames evenly spaced and slidingly mounted on the rotating cylinder, each of the three telescopic frames having a rotatably mounted roller at the end closest to each other, the three rollers respectively located in the three arc-shaped slots on the drive slot, and a correction wheel rotatably mounted at the end of each of the three telescopic frames away from each other.

[0013] Furthermore, the hollow tube is made of iron, and a magnetic ring is installed on the side of the hollow tube near the rotating cylinder, which is attracted to one side of the rotating cylinder.

[0014] The beneficial effects of this invention are as follows: 1. By pushing the bottom rack towards the side wall, the magnet attracts the alignment frame, causing the alignment frame, pressing plate, locking block, horizontal screw, and locking gear to move together towards the side wall. When the pressing plate pushes cylindrical tube one and cylindrical tube two closer to the side wall, after one side of cylindrical tube two contacts the side wall, the alignment frame, pressing plate, locking block, horizontal screw, and locking gear stop moving. At this time, the operator continues to push the bottom rack and magnet, causing the magnet to disengage from the alignment frame. The teeth on the bottom rack drive the two locking gears to rotate, and the two locking gears... The moving horizontal screw moves away, causing the locking block to contact the inner wall of the housing, thereby fixing the position of the alignment frame and the pressing plate. The pressing plate tightens cylindrical tube one and cylindrical tube two, ensuring precise contact between cylindrical tube one and cylindrical tube two and the side wall. This effectively prevents the relative position of cylindrical tube one and cylindrical tube two from shifting during the welding process, ensuring the stability of cylindrical tube one and cylindrical tube two throughout the welding process. This significantly improves welding accuracy and quality, avoids welding defects caused by inaccurate positioning, and ensures the firmness and precision of the weld between cylindrical tube one and cylindrical tube two.

[0015] 2. The motor's output shaft drives the drive plate to rotate. Under the attraction of the magnetic ring and the rotating cylinder, the rotating cylinder, three telescopic frames, three rollers, and three straightening wheels remain stationary. The three arc-shaped grooves on the drive plate drive the three telescopic frames, three rollers, and three straightening wheels to move away from each other. The three rollers act as guides within the arc-shaped grooves of the drive plate. When the three straightening wheels contact the joint between the inner rings of cylindrical tube one and cylindrical tube two, the arc-shaped grooves on the drive plate can no longer move, thus driving the rotating cylinder to rotate against the attraction of the magnetic ring. The rotating cylinder drives the three telescopic frames, three rollers, and three straightening wheels to rotate together. The three straightening wheels move along the joint between the inner rings of cylindrical tube one and cylindrical tube two, completing the correction of the joint and ensuring a more precise connection between cylindrical tube one and cylindrical tube two. In this way, the welding effect and efficiency of cylindrical tube one and cylindrical tube two are significantly improved, the stability of the welding process is enhanced, and the welding quality is more reliable.

[0016] 3. By adjusting the height of the support frame, it can accommodate cylindrical tubes of different outer diameters (tube 1 and tube 2); through the alignment frame and pressing plate, cylindrical tubes of different lengths (tube 1 and tube 2) can be precisely fixed; the drive frame drives the movement of limiting rings 1 and 2, thereby driving the welding head and three straightening wheels to move synchronously to the outer and inner ring joints of cylindrical tubes 1 and 2; under the action of the arc groove on the drive plate, cylindrical tubes of different inner diameters (tube 1 and tube 2) can be precisely corrected, ensuring that they maintain a stable and accurate position during welding; through this adjustment, it is possible to efficiently correct and weld cylindrical tubes of various inner and outer diameters and different lengths (tube 1 and tube 2), significantly improving the adaptability and flexibility of this device, while greatly improving welding efficiency and quality, ensuring the precision and firmness of cylindrical tubes 1 and 2 after welding. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the welding mechanism of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the welding mechanism and alignment mechanism of the present invention.

[0021] Figure 5 This is a cross-sectional three-dimensional structural diagram of the alignment mechanism of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram showing the disassembled parts of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the alignment mechanism, driving mechanism, and pulling mechanism of the present invention.

[0024] Figure 8 This is a cross-sectional three-dimensional structural diagram of the alignment mechanism, driving mechanism, and pulling mechanism of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram showing the disassembled parts of the drive mechanism and pulling mechanism of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the correction mechanism of the present invention.

[0027] Figure 11 This is a cross-sectional three-dimensional structural diagram of the correction mechanism of the present invention.

[0028] Figure 12This is a three-dimensional structural diagram showing the disassembled parts of the correction mechanism of the present invention.

[0029] Reference numerals: 1_Shell, 11_Side wall, 2_Cylindrical tube one, 3_Cylindrical tube two, 41_Support frame, 42_Adjusting bolt, 51_Slider, 52_Sliding frame, 53_Annular slide rail, 54_Electric slider, 55_Electric push rod, 56_Welding head, 61_Alignment frame, 611_Pressing plate, 62_Locking block, 63_Horizontal screw, 64_Locking gear, 65_Bottom rack, 66_Magnetic block, 71_Hydraulic rod, 72_Drive frame, 73_Limit ring one, 74_Limit ring two, 81_Horizontal shaft, 82_Drive gear, 83_Main rack, 84_Secondary rack, 91_Tripod, 92_Hollow tube, 93_Rotating cylinder, 94_Magnetic ring, 95_Motor, 96_Drive slot, 97_Telescopic frame, 98_Roller, 99_Correction wheel. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings.

[0031] Example 1: A self-correcting laser welding device, such as Figures 1-6 As shown, it includes a housing 1, on which two support mechanisms are provided. The support mechanisms are used to adapt to and support cylindrical tubes 2 and 3 of different diameters. A welding mechanism is provided on the housing 1 to weld cylindrical tubes 2 and 3 together.

[0032] The support mechanism includes a support frame 41. Two support frames 41 are slidably provided on the housing 1. The two support frames 41 slide up and down along the housing 1. The two support frames 41 are located on both sides of the welding mechanism. Two adjusting bolts 42 are threadedly connected to the housing 1. The lower ends of the two adjusting bolts 42 are rotatably connected to the lower parts of the two support frames 41 through bearings.

[0033] The welding mechanism includes a slide bar 51. A slide bar 51 is slidably provided on the housing 1. A sliding frame 52 is fixedly installed on the slide bar 51. An annular slide rail 53 is installed on the sliding frame 52. An electric slider 54 is slidably provided on the annular slide rail 53. An electric push rod 55 is bolted to the electric slider 54. A welding head 56 for welding cylindrical tube 1 2 and cylindrical tube 2 3 is installed on the first telescopic rod of the electric push rod 55.

[0034] The operator first adjusts the two adjusting bolts 42 by rotating them forward and backward. When the adjusting bolts 42 rotate forward, they will move the support frame 41 upward; when they rotate backward, they will move the support frame 41 downward. Then, the operator places the cylindrical tubes 2 and 3 on the two support frames 41 respectively. Next, the operator pushes the cylindrical tubes 2 and 3 until their adjacent surfaces are aligned and in contact. Then, the operator moves the slider 51, sliding frame 52, annular slide rail 53, electric slider 54, electric push rod 55, and welding head 56, aligning the welding head 56 with the joint of the cylindrical tubes 2 and 3. Finally, the operator controls the first extension rod of the electric push rod 55 to extend and move the welding head 56. Move the welding head 56 towards the joint between cylindrical tube 2 and cylindrical tube 3. When the welding head 56 moves to the designated position, stop extending the first telescopic rod of the electric push rod 55. Then, the operator controls the electric slider 54 to rotate along the annular slide rail 53. The electric slider 54 drives the electric push rod 55 and the welding head 56 to rotate. At the same time, the operator starts the welding head 56 to work, and the welding head 56 can then weld cylindrical tube 2 and cylindrical tube 3. After welding is completed, the operator closes the electric slider 54 and the welding head 56, and then controls the first telescopic rod of the electric push rod 55 to shorten and drive the welding head 56 to move away from the joint between cylindrical tube 2 and cylindrical tube 3 to reset. Then, the operator can take out the welded cylindrical tube 2 and cylindrical tube 3.

[0035] Example 2: Based on Example 1, such as Figures 1-9 As shown, it also includes an alignment mechanism for aligning cylindrical tube 2 and cylindrical tube 3 on the housing 1. The alignment mechanism includes an alignment frame 61, which is slidably mounted on the housing 1. The alignment frame 61 slides horizontally along the housing 1. The upper part of the alignment frame 61 is provided with a pressing plate 611 for pressing the cylindrical tube 2 and cylindrical tube 3. The lower part of the alignment frame 61 is open. The lower part of the alignment frame 61 is slidably provided with two locking blocks 62, which are symmetrically arranged. The lower part of the alignment frame 61 is threadedly connected with two horizontal screws 63. The ends of the two horizontal screws 63 that are close to each other are each equipped with a locking gear 64 via a spline. The ends of the two horizontal screws 63 that are far from each other are respectively rotatably connected to the two locking blocks 62 via bearings. The lower part of the housing 1 is slidably provided with a bottom rack 65. The teeth on the bottom rack 65 mesh with the two locking gears 64 simultaneously. A magnet block 66 is fixedly mounted on the bottom rack 65.

[0036] The alignment frame 61 is made of iron, and the magnet 66 is attached to one side of the alignment frame 61.

[0037] It also includes a drive mechanism mounted on the housing 1 and the welding mechanism. The drive mechanism includes an electric push rod 55. Two hydraulic rods 71 ​​are mounted on the top inside the housing 1. A drive frame 72 is mounted between the second telescopic rods of the two hydraulic rods 71. The two sides of the drive frame 72 are slidably connected to the two side walls 11 inside the housing 1. The drive frame 72 slides through the middle of the slide bar 51. A first limit ring 73 and a second limit ring 74 are mounted on the drive frame 72. The slide bar 51 is located between the first limit ring 73 and the second limit ring 74. The first limit ring 73 contacts one side of the slide bar 51.

[0038] It also includes a pulling mechanism set on the housing 1, the drive frame 72 and the bottom rack 65. A horizontal shaft 81 is rotatably provided inside the housing 1. A drive gear 82 is fixedly installed in the middle of the horizontal shaft 81. A main rack 83 is installed at the bottom of the drive frame 72. A secondary rack 84 is installed on the upper part of the bottom rack 65. The drive gear 82 is located between the main rack 83 and the secondary rack 84. The main rack 83 and the secondary rack 84 mesh with the tooth blocks on the upper and lower sides of the drive gear 82, respectively.

[0039] The operator pushes the bottom rack 65 towards the side wall 11. Because the magnet 66 attracts the alignment frame 61, the bottom rack 65 and magnet 66 can drive the alignment frame 61, pressing plate 611, two locking blocks 62, two horizontal screws 63, and two locking gears 64 towards the side wall 11. The pressing plate 611 pushes the cylindrical tube 1 2 and cylindrical tube 2 3 towards the side wall 11. When one side of cylindrical tube 2 3 contacts the side wall 11, the pressing plate 611, alignment frame 61, locking blocks 62, horizontal screws 63, and... The locking gear 64 stops moving. The operator pushes the bottom rack 65 and the magnet block 66 to continue moving. The magnet block 66 disengages from the alignment bracket 61. The teeth on the bottom rack 65 drive the two locking gears 64 to rotate. The two locking gears 64 drive the two horizontal screws 63 to rotate and move away from each other. The two locking gears 64 rotate and move away from each other on the teeth of the bottom rack 65. The two horizontal screws 63 drive the two locking blocks 62 to move away from each other. The two locking blocks 62 can then engage with the two inner sides of the housing 1. The wall 11 contacts, thereby fixing the position of the alignment frame 61 and the pressing plate 611 by the two locking blocks 62. The pressing plate 611 and the side wall 11 then fix the positions of the cylindrical tube 1 2 and the cylindrical tube 2 3, preventing them from shaking during welding and improving the welding quality. After welding, the operator pushes the bottom rack 65 away from the side wall 11. The teeth on the bottom rack 65 drive the two locking gears 64 to rotate in the opposite direction. Two horizontal screws 63 rotate in opposite directions and move toward each other. Two locking gears 64 rotate in opposite directions and move toward each other on the toothed blocks of the bottom rack 65. The two horizontal screws 63 drive the two locking blocks 62 to move toward each other, so that the two locking blocks 62 can separate from the two inner sidewalls 11 of the housing 1. Then the magnet block 66 will contact and attract one side of the alignment frame 61. The magnet block 66 pushes the alignment frame 61, the pressing plate 611, the locking block 62, the horizontal screws 63 and the locking gears 64 to move and reset.

[0040] The operator controls the second telescopic rods of the two hydraulic rods 71 ​​to shorten. The second telescopic rods of the two hydraulic rods 71 ​​drive the drive frame 72 and the main rack 83 to move closer to the alignment frame 61. The drive frame 72 slides on the slide bar 51. The drive frame 72 drives the first limit ring 73 and the second limit ring 74 to move closer to the alignment frame 61. When the second limit ring 74 contacts one side of the slide bar 51, the second limit ring 74 drives the slide bar 51, the sliding frame 52, the annular slide rail 53, and the electric slider 54. The electric push rod 55 and welding head 56 move. When the welding head 56 moves to the joint between cylindrical tube 1 2 and cylindrical tube 2 3, the second telescopic rods of the two hydraulic rods 71 ​​stop moving. When the main rack 83 moves, it drives the horizontal shaft 81 and the drive gear 82 to rotate. The rotation of the drive gear 82 drives the auxiliary rack 84 and the bottom rack 65 to move closer to the side wall 11. The bottom rack 65 drives the alignment frame 61, the pressing plate 611, the locking block 62, the horizontal screw 63, the locking gear 64, and the magnetic... The iron block 66 moves closer to the side wall 11, thus fixing the cylindrical tube 1 2 and cylindrical tube 2 3 by pressing the pressure plate 611 while adjusting the welding head 56. After the welding of cylindrical tube 1 2 and cylindrical tube 2 3 is completed, the operator controls the extension of the second telescopic rods of the two hydraulic rods 71. The second telescopic rods of the two hydraulic rods 71 ​​drive the drive frame 72 and the main rack 83 to move away from the alignment frame 61. The drive frame 72 slides on the slide bar 51, and the drive frame 72 drives the limit ring. 73 and 74 move toward the alignment frame 61. When 73 contacts the other side of the slide bar 51, 73 drives the slide bar 51, slide frame 52, annular slide rail 53, electric slider 54, electric push rod 55, and welding head 56 to move in the opposite direction and reset. When the main rack 83 moves, it drives the horizontal shaft 81 and drive gear 82 to rotate in the opposite direction. The reverse rotation of drive gear 82 drives the secondary rack 84 and bottom rack 65 to move away from the side wall 11 and reset.

[0041] Example 3: Based on Example 2, such as Figures 7-12As shown, it also includes a correction mechanism mounted on the drive frame 72 for correcting the deviation of cylindrical tube 2 and cylindrical tube 3. The correction mechanism includes a tripod 91. A tripod 91 is mounted on the drive frame 72. A hollow tube 92 is fixedly mounted on the tripod 91 by bolts. A rotating cylinder 93 is rotatably mounted on the end of the hollow tube 92 away from the tripod 91. A motor 95 is mounted inside the hollow tube 92 near the rotating cylinder 93. A drive groove 96 is mounted on the output shaft of the motor 95. The drive groove 96 is located inside the rotating cylinder 93. The drive groove 96 has three arc-shaped grooves. Three telescopic frames 97 are evenly spaced and slidably mounted on the rotating cylinder 93. A roller 98 is rotatably mounted on the end of each of the three telescopic frames 97 that is close to each other. The three rollers 98 are respectively located in the three arc-shaped grooves on the drive groove 96. A correction wheel 99 for correcting the deviation of cylindrical tube 2 and cylindrical tube 3 is rotatably mounted on the end of each of the three telescopic frames 97 that is far from each other.

[0042] The hollow tube 92 is made of iron. A magnetic ring 94 is installed on the side of the hollow tube 92 near the rotating cylinder 93. The magnetic ring 94 is attracted to one side of the rotating cylinder 93.

[0043] When the drive frame 72 moves, it drives the tripod 91, hollow tube 92, rotating cylinder 93, magnetic ring 94, motor 95, drive groove 96, three telescopic frames 97, three rollers 98, three straightening wheels 99, limit ring one 73, and limit ring two 74 to move closer to the alignment frame 61. When limit ring two 74 contacts one side of the slide bar 51, the welding head 56 is perfectly aligned with the three straightening wheels 99. The welding head 56 moves to the joint of the outer ring of cylindrical tube one 2 and cylindrical tube two 3, and the three straightening wheels 99 move to the joint of the inner ring of cylindrical tube one 2 and cylindrical tube two 3. This allows the welding head 56 and the three straightening wheels 99 to move synchronously. The operator then starts the output shaft of motor 95 to rotate. The output shaft of motor 95 drives the drive plate 96 to rotate. Under the attraction of the magnetic ring 94 and the rotating cylinder 93, the rotating cylinder 93, the three telescopic frames 97, the three rollers 98, and the three straightening wheels 99 will not rotate. The three arc-shaped grooves on the drive plate 96 will drive the three telescopic frames 97, the three rollers 98, and the three straightening wheels 99 to move away from each other. The three rollers 98 play a guiding role in the three arc-shaped grooves on the drive plate 96. After the three straightening wheels 99 contact the joint of the inner rings of cylindrical tube 2 and cylindrical tube 3, the three arc-shaped grooves on the drive plate 96 cannot move on the three rollers 98. This causes the rotating cylinder 93 to rotate against the attraction of the magnetic ring 94. The rotating cylinder 93 drives the three telescopic frames 97, three rollers 98, and three straightening wheels 99 to rotate. The three straightening wheels 99 move along the joint between the inner rings of cylindrical tube 1 2 and cylindrical tube 2 3, thus correcting the misalignment of the joint between the inner rings of cylindrical tube 1 2 and cylindrical tube 2 3. After the correction is completed, the operator starts the output shaft of the motor 95 to rotate in the opposite direction. The output shaft of the motor 95 drives the drive plate 96 to rotate in the opposite direction. The three arc-shaped grooves on the drive plate 96 drive the three telescopic frames 97, three rollers 98, and three straightening wheels 99 to move closer to each other. The joint between the inner rings of cylindrical tube 1 (2) and cylindrical tube 2 (3) is separated. Then, the operator welds the corrected cylindrical tube 1 (2) and cylindrical tube 2 (3) using welding head 56. The three arc-shaped grooves on the drive plate 96 drive the three telescopic frames 97, three rollers 98, and three correction wheels 99 to move away from each other. Then, the three correction wheels 99 move along the joint between the inner rings of cylindrical tube 1 (2) and cylindrical tube 2 (3), thus correcting the joint between the inner rings of cylindrical tube 1 (2) and cylindrical tube 2 (3), making the alignment of cylindrical tube 1 (2) and cylindrical tube 2 (3) more precise, thereby improving the welding effect and efficiency of cylindrical tube 1 (2) and cylindrical tube 2 (3).After the cylindrical tube 1 (2) and cylindrical tube 2 (3) are welded, the two hydraulic rods 71 ​​drive the drive frame 72, tripod 91, hollow tube 92, rotating cylinder 93, magnetic ring 94, motor 95, drive groove 96, three telescopic frames 97, three rollers 98, three straightening wheels 99, limit ring 1 (73) and limit ring 2 (74) to move away from the alignment frame 61. Limit ring 2 (74) disengages from one side of the slide bar 51. The drive frame 72 and limit ring 1 (73) continue to move, and limit ring 1 (73) contacts the other side of the slide bar 51. Limit ring 1 (73) drives the slide bar 51, sliding frame 52, annular slide rail 53, electric slider 54, electric push rod 55, and welding head 56 to move and reset towards the side wall 11.

[0044] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A self-correcting laser welding device, characterized by: The utility model provides a welding device for two cylindrical pipes, which comprises a shell (1), two support mechanisms arranged on the shell (1), a cylindrical pipe one (2) and a cylindrical pipe two (3) arranged on the two support mechanisms respectively, and a welding mechanism arranged on the shell (1) and used for welding the cylindrical pipe one (2) and the cylindrical pipe two (3) together. The welding mechanism comprises a sliding bar (51), the shell (1) is slidably provided with the sliding bar (51), a sliding frame (52) is fixedly installed on the sliding bar (51), an annular sliding rail (53) is installed on the sliding frame (52), an electric sliding block (54) is slidably arranged on the annular sliding rail (53), an electric push rod (55) is installed on the electric sliding block (54), and a welding head (56) is installed on a first telescopic rod of the electric push rod (55). The utility model also comprises an alignment mechanism arranged on the shell (1) and used for aligning the cylindrical pipe one (2) and the cylindrical pipe two (3), the alignment mechanism comprises an alignment frame (61), the shell (1) is slidably provided with the alignment frame (61), a pressing disc (611) is arranged on the upper portion of the alignment frame (61), the lower portion of the alignment frame (61) is provided in an open manner, two locking blocks (62) are slidably arranged on the lower portion of the alignment frame (61), the two locking blocks (62) are symmetrically arranged, two horizontal screw rods (63) are threadedly connected to the lower portion of the alignment frame (61), one locking gear (64) is installed on the end of each of the two horizontal screw rods (63) that are close to each other, the ends of the two horizontal screw rods (63) that are away from each other are rotatably connected to the two locking blocks (62) respectively, a bottom gear rack (65) is slidably arranged on the lower portion of the shell (1), the teeth of the bottom gear rack (65) are engaged with the two locking gears (64) at the same time, and a magnet block (66) is fixedly installed on the bottom gear rack (65). The alignment frame (61) is made of iron, and the magnet block (66) is adsorbed on one side of the alignment frame (61). The utility model also comprises a driving mechanism arranged on the shell (1) and the welding mechanism, the driving mechanism comprises the electric push rod (55), two hydraulic rods (71) are installed on the top of the shell (1), a driving frame (72) is installed between the second telescopic rods of the two hydraulic rods (71), the two sides of the driving frame (72) are slidably connected to the two side walls (11) in the shell (1), the driving frame (72) slidably penetrates the middle portion of the sliding bar (51), a limiting ring one (73) and a limiting ring two (74) are installed on the driving frame (72), the sliding bar (51) is located between the limiting ring one (73) and the limiting ring two (74), and one side of the limiting ring one (73) is in contact with the sliding bar (51). The utility model also comprises a pulling mechanism arranged on the shell (1), the driving frame (72) and the bottom gear rack (65), a horizontal shaft (81) is rotatably arranged in the shell (1), a driving gear (82) is fixedly installed on the middle portion of the horizontal shaft (81), a main gear rack (83) is installed on the bottom of the driving frame (72), a secondary gear rack (84) is installed on the upper portion of the bottom gear rack (65), the driving gear (82) is located between the main gear rack (83) and the secondary gear rack (84), and the main gear rack (83) and the secondary gear rack (84) are engaged with the driving gear (82). The rectification mechanism is arranged on the driving frame (72) and used for rectifying the cylindrical pipe one (2) and the cylindrical pipe two (3), the rectification mechanism comprises a tripod (91), one tripod (91) is installed on the driving frame (72), one hollow pipe (92) is fixedly installed on the tripod (91), one rotary cylinder (93) is rotatably arranged on the end of the hollow pipe (92) away from the tripod (91), one motor (95) is installed on the side of the hollow pipe (92) close to the rotary cylinder (93), one driving groove disc (96) is installed on the output shaft of the motor (95), the driving groove disc (96) is located in the rotary cylinder (93), three arc-shaped grooves are formed in the driving groove disc (96), three telescopic frames (97) are uniformly and intervally slidably arranged on the rotary cylinder (93), one roller (98) is rotatably arranged on the end of each of the three telescopic frames (97) close to each other, the three rollers (98) are respectively located in the three arc-shaped grooves on the driving groove disc (96), and one rectification wheel (99) is rotatably arranged on the end of each of the three telescopic frames (97) away from each other.

2. The self-correcting laser welding device of claim 1, wherein: The supporting mechanism comprises a supporting frame (41), two supporting frames (41) are slidably arranged on the shell (1), the two supporting frames (41) are respectively located on the two sides of the welding mechanism, two adjusting bolts (42) are threadedly connected on the shell (1), and the two adjusting bolts (42) are rotatably connected with the two supporting frames (41).

3. A self-correcting laser welding device as claimed in claim 2, characterized in that: The hollow pipe (92) is made of iron, and a magnet ring (94) is installed on the side of the hollow pipe (92) close to the rotary cylinder (93), and the magnet ring (94) is adsorbed on one side of the rotary cylinder (93).

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