Laser welding machine

Abstract

The invention discloses a laser welding machine, and relates to the technical field of laser welding, the laser welding machine comprises a working table, the upper surface of the working table is symmetrically provided with limiting chutes I, the top of the working table is provided with a steel pipe I, a steel pipe II and a positioning mechanism, and the positioning mechanism is arranged on the top of the working table. A driving mechanism is arranged at the top of the workbench, a buffering mechanism is arranged at the top of the workbench, a first roller and a second roller clamp and abut against the outer wall of a first steel pipe through a positioning mechanism, and the center of the first steel pipe and the center of a second steel pipe can be located on the same horizontal plane all the time; and then the first steel pipe and the second steel pipe are driven by the driving mechanism to get close to each other, the first roller and the second roller are made to rotate, the joint of the first steel pipe and the joint of the second steel pipe are completely attached, the problem that a weld joint is too large or too small is solved, and then the welding quality after the weld joint is welded is improved.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and more specifically to a laser welding machine. Background Technology

[0002] Laser welding is an advanced welding technology that uses a highly concentrated laser beam as a heat source. The focused laser beam bombards the surface of the workpiece, causing the workpiece to be heated and melted rapidly in a localized manner, thereby achieving the connection of materials. When laser welding is required to weld two steel pipes, the weld joints of the two steel pipes must first be manually aligned. However, existing laser welding heads still have some defects when welding curved sections.

[0003] However, compared with existing technologies, the following shortcomings still exist in practical applications:

[0004] 1. Because the shape of the arc-shaped cross section is not uniform, personnel need to manually align the arc-shaped cross section, and it requires personnel to support it for a long time. This not only consumes physical strength, but also affects the size of the weld, which will ultimately affect the sealing performance and overall quality of the weld.

[0005] 2. When welding the cross-section of a steel pipe, since the cross-section is arc-shaped, it is necessary to slowly rotate the steel pipe while welding. However, when the steel pipe is rotated, the existing rotating equipment causes slight vibration of the steel pipe during the drive. This makes it easy for the laser focus emitted by the laser welding head to not be effectively aligned with the welding surface, resulting in welding defects such as incomplete fusion, incomplete penetration, slag inclusion, and porosity in the weld, which in turn affects the quality of the weld.

[0006] 3. When welding steel pipes, the weldment is rapidly heated and melted locally to achieve the connection of materials. As the weld and its surrounding area undergo rapid heating and cooling during the welding process, thermal stress will be generated inside the material. If it is not cooled down in time, the thermal stress may accumulate and cause the steel product to deform near the edge or weak part of the weld.

[0007] Therefore, in view of this, the present invention proposes a laser welding machine to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a laser welding machine to solve the technical problems mentioned in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a laser welding machine, including a worktable, a limiting groove symmetrically formed on the upper surface of the worktable, a steel pipe 1 and a steel pipe 2 on the top of the worktable, a positioning mechanism, a driving mechanism, a buffer mechanism, and a protective mechanism on the top of the worktable.

[0010] The positioning mechanism is used to position the steel pipe one, thus preventing the welds between the steel pipe one and the steel pipe two from not being effectively aligned.

[0011] The drive mechanism is used to fix the second steel pipe when the first steel pipe and the second steel pipe are welded together, thereby improving the efficiency of the weld joint between the first steel pipe and the second steel pipe.

[0012] The buffer mechanism is used to fix the second steel pipe and reduce vibration, thus avoiding the problem of positional displacement when the first steel pipe and the second steel pipe are welded together.

[0013] The protective mechanism is used to cool down the weld after steel pipe one and steel pipe two are welded, so as to avoid the weld being too hot and affecting the quality of the steel around the weld.

[0014] Furthermore, the positioning mechanism includes a rectangular slide plate slidably connected inside a limiting slide groove. A positioning frame is fixedly connected to the top of each rectangular slide plate. A telescopic rod is symmetrically fixedly connected to the inner wall of the positioning frame. A spring is sleeved on the telescopic end of each telescopic rod. A limiting block is fixedly connected to the telescopic end of each telescopic rod. A fixing block is symmetrically fixedly connected to the inner wall of the positioning frame. A limiting plate is fixedly connected to the middle of the fixing block. A rectangular slide plate 2 is fixedly connected between the two limiting blocks. A contacting inclined plate is symmetrically fixedly connected to the outer wall of the rectangular slide plate 2. A roller is rotatably connected to the end of the rectangular slide plate 2 away from the telescopic rod. A torsion spring is symmetrically rotatably connected to the inner wall of the positioning frame and sleeved on the outer wall. An arc-shaped clamping plate is fixedly connected between the two. A roller 2 is rotatably connected to the end of the arc-shaped clamping plate away from the telescopic rod. A roller 3 is rotatably connected to the end of the arc-shaped clamping plate away from the roller 2.

[0015] Furthermore, the two ends of the torsion spring are fixedly connected to the arc-shaped clamping plate and the positioning frame, respectively, and the two ends of the first spring are fixedly connected to the fixed ends of the first limiting block and the first telescopic rod, respectively. The size between the two limiting plates is adapted to the size of the arc-shaped clamping plate.

[0016] Furthermore, the arc-shaped clamp is an arc shape that is narrow at both ends and wide in the middle. A triangular block is provided on the side of the limiting plate near the arc-shaped clamp, and the triangular block provided on the limiting plate abuts against the middle of the arc-shaped clamp. The abutting inclined plate is in the shape of a parallelogram, and the side of the abutting inclined plate away from the arc-shaped clamp abuts against the roller.

[0017] Furthermore, the driving mechanism includes a hinge plate fixedly connected to the positioning frame, a rectangular bracket rotatably connected inside the hinge plate, a fixed rod fixedly connected through the end of the rectangular bracket away from the hinge plate, a rectangular slide plate rotatably connected to the middle of the fixed rod, a fixed plate symmetrically fixedly connected to the upper surface of the worktable, and columnar rods fixedly connected to the top sidewalls of the fixed plates, each columnar rod having a limit groove 2 at the end near the fixed plate, and a columnar baffle fixedly sleeved at the end of the columnar rod away from the fixed plate.

[0018] Furthermore, the internal dimensions of the rectangular sliding plate three are adapted to the dimensions of the cylindrical rod, and the cylindrical rod has a recessed hole inside.

[0019] Furthermore, the buffer mechanism includes a buffer rod fixedly connected to the top of the cylindrical rod away from the fixed plate. The end of the buffer rod away from the cylindrical rod has a groove in a circular array. A fixed rod is rotatably connected inside the groove. An abutment plate is fixedly connected to the middle of the fixed rod. A fixed rod is slidably connected inside the buffer rod. A hinge plate is fixedly connected in a circular array to the end of the fixed rod away from the cylindrical rod. A fixed plate is rotatably connected inside the hinge plate. A telescopic rod is fixedly connected to the end of the fixed rod away from the hinge plate. A spring is sleeved on the telescopic end of the telescopic rod. A fixed block is fixedly connected to the end of the spring away from the fixed rod. The fixed block is fixedly connected to the rectangular sliding plate.

[0020] Furthermore, the top end of the second fixed plate is slidably connected to the inside of the abutment plate, and an abutment block is provided at the end of the abutment plate away from the second fixed plate. The buffer rod has a groove hole two inside. The size of the third fixed rod is adapted to the size of the first groove hole and the second groove hole. The two ends of the second spring are respectively fixedly connected to the fixed end and the telescopic end of the second telescopic rod. The size of the second limiting groove is adapted to the size of the second fixed block.

[0021] Furthermore, the protective mechanism includes four fixed plates symmetrically fixedly connected to the upper surface of the workbench, a circular slide is fixedly connected between the two fixed plates, a rectangular slide is symmetrically slidably connected to the inner surface of the circular slide, a welding head is rotatably connected between the two rectangular slides, an air collection box is fixedly connected to the side wall of the welding head, and a high-pressure nozzle is fixedly connected to the side of the air collection box away from the rectangular slide.

[0022] Furthermore, the gas collection box stores cooling gas, and the dimension between the two fixing rods is adapted to the dimension of the welding head.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The positioning mechanism makes roller one and roller two clamp and abut against the outer wall of steel pipe one, which helps the center of steel pipe one and the center of steel pipe two to always be on the same horizontal plane. Then, the driving mechanism drives steel pipe one and steel pipe two to move closer to each other, so that roller one and roller two rotate to achieve complete fit at the connection of steel pipe one and steel pipe two, avoiding the problem of weld seam being too large or too small, thereby improving the welding quality after weld seam welding;

[0025] (2) The buffer mechanism makes the opening of the contact plate contact and fix the inner wall of the second steel pipe, which avoids the vibration problem of the second steel pipe during rotation. At the same time, the positioning mechanism clamps and fixes the first steel pipe, thereby improving the stability of the connection between the first steel pipe and the second steel pipe, ensuring that the first steel pipe and the second steel pipe are always in close contact during welding, and also helps the laser focus to always be on the same horizontal plane as the weld, thereby improving the welding rate.

[0026] (3) The protective mechanism allows the welding head and the gas collection box to weld and cool the weld at the same time. Since the weld and its surrounding area will be rapidly heated during the welding process, the problem of thermal stress generated inside the material is avoided. This prevents the accumulation of thermal stress from causing the weld to be close to the edge or weak part of the steel product and deforming the steel product. This not only improves the overall performance of the steel pipe, but also ensures the aesthetics of the steel pipe after welding. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a partial structural diagram of the positioning mechanism of the present invention;

[0029] Figure 3 This is a schematic diagram showing the positional relationship between the positioning frame and the limiting plate of the present invention;

[0030] Figure 4 This is a schematic diagram showing the positional relationship between the fixed block and the roller of the present invention;

[0031] Figure 5 This is a partial structural diagram of the drive mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram showing the positional relationship between the hinge plate 1 and the limiting slide groove 2 of the present invention;

[0033] Figure 7 This is a partial structural diagram of the buffer mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram showing the positional relationship between the second fixing rod and the second fixing plate of the present invention;

[0035] Figure 9 This is a schematic diagram showing the positional relationship between the fixing rod three and the fixing block two of the present invention;

[0036] Figure 10 This is a partial structural diagram of the protective mechanism of the present invention;

[0037] Figure 11 This is a schematic diagram showing the positional relationship between the rectangular sliding plate and the high-pressure nozzle of the present invention.

[0038] The diagram is labeled as follows: 1. Workbench; 2. Limiting slide 1; 3. Steel pipe 1; 4. Steel pipe 2; 5. Positioning mechanism; 51. Rectangular slide 1; 52. Positioning frame; 53. Telescopic rod 1; 54. Spring 1; 55. Limiting block 1; 56. Fixing block 1; 57. Limiting plate; 58. Rectangular slide 2; 59. Abutting inclined plate; 510. Roller 1; 512. Torsion spring; 513. Arc-shaped clamp; 514. Roller 2; 515. Roller 3; 6. Drive mechanism; 61. Hinge plate 1; 62. Rectangular bracket; 63. Fixing rod 1 64. Rectangular sliding plate three; 65. Fixed plate one; 66. Columnar rod; 67. Limiting slide groove two; 68. Columnar baffle; 7. Buffer mechanism; 71. Buffer rod; 72. Groove one; 73. Fixed rod two; 74. Contact plate; 75. Fixed rod three; 76. Hinge plate two; 77. Fixed plate two; 78. Telescopic rod two; 79. Spring two; 710. Fixed block two; 8. Protective mechanism; 81. Fixed plate four; 82. Circular slide; 83. Rectangular sliding plate four; 84. Welding head; 85. Air collection box; 86. High-pressure nozzle. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] Embodiments of the present invention

[0041] A laser welding machine, reference Figure 1 As shown, it includes a worktable 1, with symmetrical limit grooves 2 on the upper surface of the worktable 1, a steel pipe 3 on the top of the worktable 1, and a steel pipe 4 on the top of the worktable 1.

[0042] The laser welding machine described above can be specifically implemented as follows:

[0043] refer to Figures 1 to 11 As shown, a positioning mechanism 5, a driving mechanism 6, a buffer mechanism 7, and a protective mechanism 8 are provided on the top of the worktable 1.

[0044] refer to Figures 1 to 4 As shown, the positioning mechanism 5 is used to position the steel pipe 3, thus preventing the weld between the steel pipe 3 and the steel pipe 4 from being ineffectively aligned.

[0045] refer to Figures 1 to 4 As shown, the positioning mechanism 5 includes a rectangular slide plate 51 slidably connected inside the limiting slide groove 2. A positioning frame 52 is fixedly connected to the top of each rectangular slide plate 51. Telescopic rods 53 are symmetrically fixedly connected to the inner wall of the positioning frame 52. Springs 54 are sleeved on the telescopic ends of each telescopic rod 53. Limit blocks 55 are fixedly connected to the telescopic ends of each telescopic rod 53. Fixing blocks 56 are symmetrically fixedly connected to the inner wall of the positioning frame 52. A limiting plate 57 is fixedly connected to the middle of each fixing block 56. A rectangular... The rectangular sliding plate 58 has a symmetrically fixed anti-collision inclined plate 59 on its outer wall. The end of the rectangular sliding plate 58 away from the telescopic rod 53 is rotatably connected to a roller 510. The inner wall of the positioning frame 52 has symmetrically rotatably connected plates 511. The outer wall of 511 is fitted with a torsion spring 512. The two 511 are fixedly connected to an arc-shaped clamping plate 513. The end of the arc-shaped clamping plate 513 away from the telescopic rod 53 is rotatably connected to a roller 514. The end of the arc-shaped clamping plate 513 away from the roller 514 is rotatably connected to a roller 515.

[0046] refer to Figures 1 to 4 As shown, the two ends of the torsion spring 512 are fixedly connected to the arc-shaped clamping plate 513 and the positioning frame 52 respectively, and the two ends of the spring 54 are fixedly connected to the fixed ends of the limiting block 55 and the telescopic rod 53 respectively. The size between the two limiting plates 57 is adapted to the size of the arc-shaped clamping plate 513.

[0047] refer to Figures 1 to 4 As shown, the arc-shaped clamp 513 is an arc shape that is narrow at both ends and wide in the middle. A triangular block is provided on the side of the limiting plate 57 near the arc-shaped clamp 513, and the triangular block provided on the limiting plate 57 abuts against the middle of the arc-shaped clamp 513. The abutting inclined plate 59 is in the shape of a parallelogram, and the side of the abutting inclined plate 59 away from the arc-shaped clamp 513 abuts against the roller 3 515.

[0048] It should be noted that: Rectangular slide plate 1 51 is electrically connected to an external control device. The function of rectangular slide plate 1 51 is similar to that of an electric slide plate, allowing rectangular slide plate 1 51 to slide inside the limiting slide groove 2; Roller 1 510 and Roller 2 514 are both electrically connected to an external control device. The function of roller 2 514 and Roller 1 510 is similar to that of an electric roller, allowing roller 2 514 and Roller 1 510 to rotate on the top of the arc-shaped clamp 513 and the rectangular slide plate 2 58, respectively.

[0049] refer to Figure 5 and Figure 6 As shown, the drive mechanism 6 is used to fix the steel pipe 4 when the steel pipe 3 and the steel pipe 4 are welded together, thereby improving the efficiency of the weld between the steel pipe 3 and the steel pipe 4.

[0050] refer to Figure 5 and Figure 6 As shown, the drive mechanism 6 includes a hinge plate 61 fixedly connected to the positioning frame 52. A rectangular bracket 62 is rotatably connected inside the hinge plate 61. A fixed rod 63 is fixedly connected through the end of the rectangular bracket 62 away from the hinge plate 61. A rectangular slide plate 64 is rotatably connected to the middle of the fixed rod 63. Fixed plates 65 are symmetrically fixedly connected to the upper surface of the worktable 1. Column rods 66 are fixedly connected to the top sidewalls of the fixed plates 65. Limit grooves 67 are opened at the ends of the column rods 66 near the fixed plates 65. Column baffles 68 are fixedly sleeved at the ends of the column rods 66 away from the fixed plates 65.

[0051] refer to Figure 5 and Figure 6 As shown, the internal dimensions of the rectangular sliding plate 64 are adapted to the dimensions of the cylindrical rod 66, and the cylindrical rod 66 has a recessed hole inside;

[0052] Summary 1: When existing technicians manually align steel pipe 3 and steel pipe 4, the operation is not only complicated, but the connection between steel pipe 3 and steel pipe 4 cannot always maintain a stable state. This invention uses a positioning mechanism 5 to make roller 1 510 and roller 2 514 clamp and abut against the outer wall of steel pipe 3, which helps the center of steel pipe 3 and the center of steel pipe 4 to always be on the same horizontal plane. Then, the driving mechanism 6 drives steel pipe 3 and steel pipe 4 to move closer to each other, so that roller 1 510 and roller 2 514 rotate to achieve a complete fit at the connection between steel pipe 3 and steel pipe 4, avoiding the problem of the weld being too large or too small, thereby improving the welding quality after welding.

[0053] refer to Figures 7 to 9 As shown, the buffer mechanism 7 is used to fix the steel pipe 4 and reduce vibration, thus avoiding the problem of positional displacement when the steel pipe 3 and the steel pipe 4 are welded.

[0054] refer to Figures 7 to 9 As shown, the buffer mechanism 7 includes a buffer rod 71 fixedly connected to the top of the column rod 66 away from the fixed plate 65. The end of the buffer rod 71 away from the column rod 66 has a groove 72 arranged in a ring. The inside of the groove 72 is rotatably connected to a fixed rod 73. The middle of the fixed rod 73 is fixedly connected to an abutment plate 74. The inside of the buffer rod 71 is slidably connected to a fixed rod 75. The end of the fixed rod 75 away from the column rod 66 is fixedly connected to a hinge plate 76 arranged in a ring. The inside of the hinge plate 76 is rotatably connected to a fixed plate 77. The end of the fixed rod 75 away from the hinge plate 76 is fixedly connected to a telescopic rod 78. The telescopic end of the telescopic rod 78 is sleeved with a spring 79. The end of the spring 79 away from the fixed rod 75 is fixedly connected to a fixed block 710, and the fixed block 710 is fixedly connected to the rectangular sliding plate 64.

[0055] refer to Figures 7 to 9 As shown, the top of the fixed plate 77 is slidably connected to the inside of the contact plate 74. The contact plate 74 is provided with a contact block at the end away from the fixed plate 77. The buffer rod 71 has a groove hole 2 inside. The size of the fixed rod 75 is adapted to the size of the groove hole 1 and the groove hole 2. The two ends of the spring 79 are fixedly connected to the fixed end and the telescopic end of the telescopic rod 78 respectively. The size of the limiting slide groove 67 is adapted to the size of the fixed block 710.

[0056] Summary 2: Existing technologies involve welding steel pipe 3 and steel pipe 4 using a rotational method, which causes vibration between them and affects the gap between them. This invention addresses this by using a buffer mechanism 7 to allow the opening of the contact plate 74 to contact and fix the inner wall of steel pipe 4, preventing vibration during rotation. Simultaneously, the positioning mechanism 5 clamps and fixes steel pipe 3, improving the stability of the connection between steel pipe 3 and steel pipe 4. This ensures that steel pipe 3 and steel pipe 4 remain in close contact during welding and also helps keep the laser focus on the same horizontal plane as the weld, thereby increasing the welding rate.

[0057] refer to Figure 1 and Figure 11 As shown, the protective mechanism 8 is used to cool down the weld after the steel pipe 3 and steel pipe 4 are welded, so as to avoid the weld with excessively high temperature from affecting the quality of the steel around the weld.

[0058] refer to Figure 1 and Figure 11As shown, the protective mechanism 8 includes four fixed plates 81 symmetrically fixedly connected to the upper surface of the workbench 1. A circular slide 82 is fixedly connected between the two fixed plates 81. A rectangular slide plate 83 is symmetrically slidably connected to the inner surface of the circular slide plate 82. A welding head 84 is rotatably connected between the two rectangular slide plates 83. An air collection box 85 is fixedly connected to the side wall of the welding head 84. A high-pressure nozzle 86 is fixedly connected to the side of the air collection box 85 away from the rectangular slide plate 83.

[0059] refer to Figure 1 and Figure 11 As shown, the gas collection box 85 stores cooling gas, and the dimensions between the two fixing rods 63 are adapted to the dimensions of the welding head 84;

[0060] It should be noted that: the rectangular slide plate 83 is electrically connected to the external control device, so that the rectangular slide plate 83 can slide inside the circular slide table 82; the welding head 84 and the high-pressure nozzle 86 are both electrically connected to the external control device, so that the welding head 84 drives the high-pressure nozzle 86 to rotate between the rectangular slide plates 83.

[0061] Summary 3: Compared with existing technologies where welds cannot be cooled quickly after welding, which can easily affect the steel products around the weld, this invention uses a protective mechanism 8 to allow the welding head 84 and the gas collection box 85 to cool the weld while welding. Since the weld and its surrounding area undergo rapid heating during the welding process, the problem of internal thermal stress in the material is avoided. This prevents the accumulation of thermal stress from causing deformation of the steel products near the edge or weak points of the weld, thus improving the overall performance of the steel pipe and ensuring the aesthetics of the welded steel pipe.

[0062] The complete working principle and steps of the above embodiments are as follows:

[0063] Initial constraints: Spring 54 is in an uncompressed state, telescopic rod 53 is in an unretracted state, roller 515 is in contact with the end of the contacting inclined plate 59 away from the limiting block 55, torsion spring 512 is in a relaxed state, rectangular slide plate 64 is at the end of the limiting groove 67 away from the fixed plate 65, fixed plate 77 is at the end of the contacting plate 74 away from the fixed rod 73, telescopic rod 78 is in an unextended state, spring 79 is in an unstretched state;

[0064] When using:

[0065] The step used to position steel pipe 3 avoids the weld seams between steel pipe 3 and steel pipe 4 from not being effectively aligned:

[0066] refer to Figures 1 to 4As shown, the operator places steel pipe 3 on two rollers 510, so that the outer wall of steel pipe 3 abuts against rollers 510. Rollers 510 cause rectangular slide plate 58 to move between the two limiting plates 57 towards the side closer to telescopic rod 53. Rectangular slide plate 58 causes contact plate 59 to move synchronously towards the side closer to telescopic rod 53. Contact plate 59 then contacts roller 515, causing roller 515 to move from the side away from telescopic rod 53 towards the side closer to telescopic rod 53. Under the action of contact plate 59, roller 515 flips away from rectangular slide plate 58. Roller 515 causes the bottom end of rectangular slide plate 58 to flip around axis 511 towards the outside of positioning frame 52. Rectangular slide plate 58 then drives rollers around axis 511. Roller 2 514 flips towards the side closer to rectangular slide plate 2 58, causing roller 2 514 and roller 1 510 to clamp and abut against the outer wall of steel pipe 3. At the same time, as rectangular slide plate 2 58 moves towards the side closer to telescopic rod 1 53, it causes the limiting block 1 55 to move synchronously, causing the limiting block 1 55 to retract against the top of telescopic rod 1 53 and compress spring 1 54. Then, the operator controls the rectangular slide plate 1 51 to start moving inside the limiting slide groove 2 through the external control device. Subsequently, the operator controls roller 1 510 and roller 2 514 to rotate through the external control device, causing roller 1 510 and roller 2 514 to drive steel pipe 3 to rotate synchronously until the weld joint of steel pipe 3 and steel pipe 2 4 is aligned. At this time, the operation of roller 1 510 and roller 2 514 is completed.

[0067] This procedure is used to fix steel pipe 4 when welding steel pipe 3 and steel pipe 4 together, thereby improving the efficiency of welding between steel pipe 3 and steel pipe 4.

[0068] refer to Figure 5 and Figure 6 As shown, during the movement of rectangular slide plate 51, the rectangular slide plate 51 drives the hinge plate 61 to move synchronously through the positioning frame 52. This causes the hinge plate 61 to start to rotate when it contacts the end of the rectangular support 62 near the positioning frame 52. This causes the rectangular support 62 to drive the rectangular slide plate 64 to slide on the outer wall of the column rod 66 towards the side closer to the fixed plate 65 through the fixed rod 63. At the same time, as the rectangular slide plate 64 slides on the outer wall of the column rod 66 towards the side closer to the fixed plate 65, the end of the fixed rod 63 away from the rectangular support 62 starts to rotate around the fixed rod 63 as the axis.

[0069] The steps used to fix steel pipe 2 4 and reduce vibration avoid the problem of positional displacement during welding of steel pipe 1 3 and steel pipe 2 4 are as follows:

[0070] refer to Figures 7 to 9As shown, before the steel pipe 3 is clamped and placed inside the positioning mechanism 5, and before the rectangular slide plate 51 moves inside the limiting slide groove 2, the operator places the steel pipe 4 onto the outer wall of the column rod 66 in an inclined manner. Simultaneously, as the rectangular slide plate 64 moves towards the side closer to the fixed plate 65 on the outer wall of the column rod 66, the rectangular slide plate 64 drives the fixed block 710 to move synchronously towards the side closer to the fixed plate 65 inside the limiting slide groove 67. This causes the fixed block 710 to drive the fixed end of the telescopic rod 78 to move towards the side closer to the fixed plate 65. Meanwhile, the telescopic rod 78, under the elastic action of the spring 79, does not extend, causing the telescopic rod 78 to drive the fixed rod 75 to slide towards the side closer to the fixed plate 65 inside the groove hole 2 inside the buffer rod 71. This causes the fixed rod 75 to drive the hinge plate 76 to move synchronously, causing the hinge plate 76 to drive the end of the fixed plate 77 near the fixed rod 75 to move synchronously towards the side closer to the fixed plate 65. Lateral movement causes the second fixed plate 77 to begin to flip, causing the end of the second fixed plate 77 away from the third fixed rod 75 to slide inside the contact plate 74 away from the second fixed rod 73. Simultaneously, the second fixed plate 77 pulls the end of the contact plate 74 away from the first fixed plate 65, causing it to flip around the second fixed rod 73 towards the third fixed rod 75. This further causes the end of the contact plate 74 away from the second hinge plate 76 to flip away from the third fixed rod 75, until the contact plate 74 is far from the second hinge plate 76. After one end contacts the inner wall of steel pipe 2 4, the fixing block 2 710 will continue to move towards the side closer to the fixing plate 1 65, so that the fixing block 2 710 drives the fixed end of the telescopic rod 2 78 to move towards the side closer to the fixing plate 1 65, so that the fixing block 2 710 starts to pull the telescopic rod 2 78 to extend, so that the telescopic rod 2 78 drives the spring 2 79 to extend towards the side closer to the fixing plate 1 65 simultaneously, until steel pipe 1 3 and steel pipe 2 4 are aligned, at which point the fixing block 2 710 stops moving;

[0071] This process is used to cool the weld seam after welding steel pipe 3 and steel pipe 4, preventing the weld seam from being too hot and affecting the quality of the surrounding steel.

[0072] refer to Figures 1 to 11 As shown, after steel pipe 3 and steel pipe 4 are connected and both steel pipe 3 and steel pipe 4 are fixed, the operator controls the rectangular sliding plate 4 83 to start rotating inside the circular sliding table 82 through the external equipment. At the same time, the operator controls the welding head 84 to rotate between the rectangular sliding plate 4 83 through the external control equipment, so that the welding head 84 is aligned with the connection between steel pipe 3 and steel pipe 4, so that the welding head 84 performs laser welding. At the same time, the operator controls the high-pressure nozzle 86 to start working synchronously through the external control equipment, so that the high-pressure nozzle 86 cools down the weld after laser welding in time.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser welding machine, comprising a workbench (1), wherein a limiting slide groove (2) is symmetrically provided on the upper surface of the workbench (1), a steel pipe (3) is provided on the top of the workbench (1), and a steel pipe (4) is provided on the top of the workbench (1), wherein: The top of the workbench (1) is provided with a positioning mechanism (5), the top of the workbench (1) is provided with a driving mechanism (6), the top of the workbench (1) is provided with a buffer mechanism (7), and the top of the workbench (1) is provided with a protection mechanism (8); The positioning mechanism (5) is used to position the steel pipe (3), thereby preventing the weld between the steel pipe (3) and the steel pipe (4) from being unable to be effectively aligned; The driving mechanism (6) is used to fix the steel pipe (4) when the steel pipe (3) and the steel pipe (4) are welded together, thereby improving the efficiency of the welded joint between the steel pipe (3) and the steel pipe (4); The buffer mechanism (7) is used to fix the second steel pipe (4) and reduce the vibration effect, thereby avoiding the problem of positional deviation when welding the first steel pipe (3) and the second steel pipe (4); The protection mechanism (8) is used to cool the weld after the first steel pipe (3) and the second steel pipe (4) are welded, thereby preventing the weld with too high a temperature from affecting the quality of the steel around the weld.

2. A laser welding machine according to claim 1, characterized in that: The positioning mechanism (5) comprises a rectangular slide plate (51) slidably connected to the inside of a limiting slide groove (2); the top of the rectangular slide plate (51) is fixedly connected to a positioning frame (52); a telescopic rod (53) is symmetrically fixedly connected to the inner wall of the positioning frame (52); the telescopic ends of the telescopic rod (53) are sleeved with springs (54); the telescopic ends of the telescopic rod (53) are fixedly connected to a limiting block (55); a fixed block (56) is symmetrically fixedly connected to the inner wall of the positioning frame (52); the middle of the fixed block (56) is fixedly connected to a limiting plate (57); a rectangular slide plate is fixedly connected between the two limiting blocks (55). The second rectangular slide plate (58) is symmetrically fixedly connected with a resisting inclined plate (59) on its outer wall, and one end of the second rectangular slide plate (58) away from the telescopic rod (53) is rotatably connected with a roller (510), and the inner wall of the positioning frame (52) is symmetrically rotatably connected with (511), and a torsion spring (512) is sleeved on the outer wall of the (511), and an arc-shaped clamping plate (513) is fixedly connected between the two (511), and one end of the arc-shaped clamping plate (513) away from the telescopic rod (53) is rotatably connected with a roller (514), and one end of the arc-shaped clamping plate (513) away from the roller (514) is rotatably connected with a roller (515).

3. A laser welding machine according to claim 2, characterized in that: The two ends of the torsion spring (512) are respectively fixedly connected to the arc-shaped clamping plate (513) and the positioning frame (52); the two ends of the spring (54) are respectively fixedly connected to the fixed ends of the limit block (55) and the telescopic rod (53); and the size between the two limit plates (57) is adapted to the size of the arc-shaped clamping plate (513).

4. A laser welding machine according to claim 2, characterized in that: The arc-shaped clamping plate (513) is in an arc shape with narrow ends and wide in the middle. A triangular block is provided on the side of the limiting plate (57) close to the arc-shaped clamping plate (513), and the triangular block provided on the limiting plate (57) contacts the middle part of the arc-shaped clamping plate (513). The contacting inclined plate (59) is in a parallelogram shape, and the side of the contacting inclined plate (59) away from the arc-shaped clamping plate (513) contacts the roller three (515).

5. A laser welding machine according to claim 2, characterized in that: The driving mechanism (6) comprises an articulated plate (61) fixedly connected to the positioning frame (52); a rectangular bracket (62) is rotatably connected inside the articulated plate (61); a fixed rod (63) is passed through and fixedly connected to the end of the rectangular bracket (62) away from the articulated plate (61); a rectangular slide plate (64) is rotatably connected to the middle of the fixed rod (63); a fixed plate (65) is symmetrically fixedly connected to the upper surface of the workbench (1); a columnar rod (66) is fixedly connected to the top side wall of the fixed plate (65); a limiting sliding groove (67) is provided at one end of the columnar rod (66) close to the fixed plate (65); and a columnar baffle (68) is fixedly sleeved on one end of the columnar rod (66) away from the fixed plate (65).

6. A laser welding machine according to claim 5, characterized in that: The inner dimensions of the rectangular slide plate (64) match the dimensions of the columnar rod (66), and a groove hole (1) is provided inside the columnar rod (66).

7. A laser welding machine according to claim 5, characterized in that: The buffer mechanism (7) comprises a buffer rod (71) fixedly connected to the top of the columnar rod (66) away from the fixing plate (65); one end of the buffer rod (71) away from the columnar rod (66) is provided with a groove (72) in a ring array; a fixing rod (73) is rotatably connected inside the groove (72); a middle part of the fixing rod (73) is fixedly connected to a contact plate (74); a fixing rod (75) is slidably connected inside the buffer rod (71); the fixing rod (75) is away from the columnar rod (66) and is provided with a groove (72) in a ring array; a fixing rod (73) is rotatably connected inside the groove (72); a contact plate (74) is fixedly connected to the middle part of the fixing rod (73); a fixing rod (75) is slidably connected inside the buffer rod (71); and the fixing rod (75) is away from the columnar rod (66). One end of the hinge plate 66 is fixedly connected to a hinge plate 2 (76) in a circular array, and the hinge plate 2 (76) is internally rotatably connected to a fixed plate 2 (77), and the fixed rod 3 (75) is fixedly connected to a telescopic rod 2 (78) at one end away from the hinge plate 2 (76), and the telescopic end of the telescopic rod 2 (78) is sleeved with a spring 2 (79), and the spring 2 (79) is fixedly connected to a fixed block 2 (710) at one end away from the fixed rod 3 (75), and the fixed block 2 (710) is fixedly connected to the rectangular slide plate 3 (64).

8. A laser welding machine according to claim 7, characterized in that: The top end of the second fixing plate (77) is slidably connected to the inside of the contact plate (74); an end of the contact plate (74) away from the second fixing plate (77) is provided with a contact block; a second groove hole is provided inside the buffer rod (71); the size of the third fixing rod (75) is matched with the size of the first groove hole and the second groove hole; the two ends of the second spring (79) are respectively fixedly connected to the fixed end and the telescopic end of the second telescopic rod (78); the size of the second limiting slide groove (67) is matched with the size of the second fixing block (710).

9. A laser welding machine according to claim 5, characterized in that: The protection mechanism (8) comprises a fixing plate four (81) symmetrically fixedly connected to the upper surface of the workbench (1), a circular slide (82) fixedly connected between the two fixing plates four (81), a rectangular slide four (83) symmetrically slidably connected to the inner surface of the circular slide (82), a welding head (84) rotatably connected between the two rectangular slides four (83), an air collecting box (85) fixedly connected to the side wall of the welding head (84), and a high-pressure nozzle (86) fixedly connected to the side of the air collecting box (85) away from the rectangular slide four (83).

10. A laser welding machine according to claim 9, characterized in that: The air collecting box (85) stores cooling air inside, and the size between the two fixing rods (63) is adapted to the size of the welding head (84).

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