A welding fixture for outfitting cabin equipment and its clamping method

Abstract

This invention relates to the field of welding fixture technology, specifically a welding fixture and clamping method for outfitting cabin equipment. It includes a guide rail with two sliders that can move synchronously in opposite directions, a second limiting rod on the guide rail, a sliding plate slidably engaged on each slider, the sliding plate being movably fitted onto the second limiting rod, and an elastic clearance component between the sliders and the sliding plate. This elastic clearance component allows the sliding plate to slide on the slider when pushed by an external force. A sleeve fitted onto the second limiting rod is embedded and engaged inside the sliding plate, and the sleeve and the second limiting rod are connected by a first linkage mechanism. The sleeve rotates when sliding on the second limiting rod. A bracket is provided on the sliding plate, and a clamping plate for holding thin-walled outfitting pipe fittings is hinged to the bracket. This invention can achieve synchronous radial and axial constraints on thin-walled outfitting pipe fittings, making them less prone to loosening or deformation during welding, while maintaining coaxiality and improving weld quality.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, specifically a welding fixture for outfitting cabin equipment and its clamping method. Background Technology

[0002] Welding fixtures, as core auxiliary tools in the welding process, directly affect welding efficiency, precision, and finished product quality. This is especially true in aerospace and shipbuilding industries, where welding objects are often large, thin-walled, or complex metal components (such as aircraft engine casings and ship engine room equipment), requiring extremely high levels of positioning stability, adaptability, and automation from the fixtures. For example, welding aircraft engine casings requires strict control of coaxiality to avoid weld cracks.

[0003] Traditional fixtures struggle to evenly distribute clamping force when welding large, thin-walled parts, easily causing loosening or deformation during welding, leading to coaxiality deviations and reduced weld quality. For example, inaccurate radial positioning during casing welding can cause dangerous cracks, affecting structural reliability. Furthermore, existing fixtures often rely on manual adjustment of clamping positions, resulting in low efficiency and susceptibility to human error. While some existing welding fixtures for mechanical assembly use ball screws to move the sliding seat, manual motor control is still required, making it difficult to meet the automation needs of complex welding paths. Therefore, we provide a welding fixture and clamping method for outfitting engine room equipment to address the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a welding fixture and clamping method for outfitting cabin equipment, in order to solve the problems mentioned in the background art, that traditional fixtures are difficult to evenly distribute clamping force when welding large thin-walled parts, which can easily cause parts to loosen or deform during the welding process, resulting in coaxiality deviation and reduced weld quality, as well as difficulty in meeting the automation requirements of complex welding paths.

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

[0006] A welding fixture for outfitting cabin equipment includes a guide rail. Two sliders that can move synchronously in opposite directions are slidably engaged on the guide rail. A second limiting rod is provided on the guide rail. A sliding plate is slidably engaged on each slider. The sliding plate is movably sleeved on the second limiting rod. An elastic clearance component is provided between the sliders and the sliding plate, allowing the sliding plate to slide on the sliders when pushed by an external force.

[0007] The inner side of the slide plate is fitted with a sleeve that is sleeved on the second limiting rod. The sleeve and the second limiting rod are connected by a first linkage mechanism. The sleeve will rotate when it slides on the second limiting rod.

[0008] The slide plate is equipped with a bracket, and the bracket is hinged with a clamping plate for clamping the thin-walled outfitting pipe fitting. The clamping plate and the sleeve are connected by a second linkage mechanism. When the sleeve rotates, it will drive the two clamping plates to rotate and clamp the thin-walled outfitting pipe fitting.

[0009] The support is provided with a cylinder, and one end of the cylinder is provided with multiple arc-shaped clamps distributed at equal angles. The arc-shaped clamps and the sleeve are connected by a third linkage mechanism. When the sleeve rotates, it will drive the multiple arc-shaped clamps to move closer together to clamp the end of the thin-walled outfitting pipe fitting.

[0010] A welding fixture for outfitting cabin equipment as described above: a bidirectional lead screw is rotatably mounted on the guide rail, a motor is mounted on the guide rail, the bidirectional lead screw is installed at the output end of the motor and is driven to rotate by the motor, a first threaded sleeve is mounted on the slider, the slider is threadedly connected to the bidirectional lead screw through the first threaded sleeve, and a limiting component is mounted on the guide rail when the slider moves;

[0011] The limiting component includes a first limiting rod disposed on a guide rail. The slider has a through hole with an inner diameter that matches the outer diameter of the first limiting rod, and the first limiting rod is inserted through the through hole.

[0012] A welding fixture for outfitting cabin equipment as described above: a pressure sensing plate is fixedly installed on one side surface of the clamping plate, and the pressure sensing plate is communicatively connected to a motor.

[0013] A welding fixture for outfitting cabin equipment as described above: the elastic clearance component includes a first baffle disposed on a slider and sleeved on a second limiting rod, a second baffle disposed on the slider and sleeved on the second limiting rod, and a spring sleeved on the second limiting rod disposed between the first baffle and the second baffle.

[0014] A welding fixture for outfitting cabin equipment as described above: The first linkage mechanism includes a ball that is movably embedded and engaged in the inner wall of the sleeve and a spiral groove formed on the surface of the second limiting rod. The ball is embedded and engaged in the spiral groove and can roll along the track where the spiral groove is located.

[0015] A welding fixture for outfitting cabin equipment as described above: The second linkage mechanism includes a threaded rod mounted on a support, the threaded rod and the sleeve are driven by a gear mechanism, the sleeve rotates while the threaded rod rotates, a second threaded sleeve is rotatably mounted on the support, the second threaded sleeve is sleeved on the threaded rod and threadedly connected to the threaded rod, a hinge rod is provided between the clamping plate and the second threaded sleeve, the two ends of the hinge rod are respectively hinged to the clamping plate and the second threaded sleeve;

[0016] The gear mechanism includes a first bevel gear mounted on a sleeve and a second bevel gear mounted on a threaded rod, wherein the first bevel gear meshes with the second bevel gear.

[0017] A welding fixture for outfitting cabin equipment as described above: The third linkage mechanism includes a rotating rod rotatably mounted on a support. The rotating rod and a threaded rod are connected by a belt mechanism. When the threaded rod rotates, it drives the rotating rod to rotate. A tapered threaded head is rotatably installed inside the cylinder. A fixing ring is provided on the inner wall of the cylinder. An internally threaded arc-shaped piece that is threadedly connected to the tapered threaded head is slidably engaged on the inner side of the fixing ring. The internally threaded arc-shaped piece is fixed to an arc-shaped clamping plate. The tapered threaded head and the rotating rod are connected by a bevel gear mechanism. When the rotating rod rotates, it drives the tapered threaded head to rotate.

[0018] A welding fixture for outfitting cabin equipment as described above: the belt mechanism includes a first pulley mounted on a rotating rod and a second pulley mounted on a threaded rod, with the first pulley and the second pulley connected by a belt drive;

[0019] The outer wall of the internally threaded arc-shaped piece is provided with a limiting block, and the inner wall of the fixing ring is provided with a sliding groove, and the limiting block is movably engaged in the sliding groove.

[0020] The bevel gear mechanism includes a bevel gear ring disposed on a bevel thread head and a third bevel gear disposed on a rotating rod, wherein the bevel gear ring and the third bevel gear mesh.

[0021] A method for clamping a welding fixture for outfitting cabin equipment, comprising the following steps:

[0022] S1, When butt welding two thin-walled outfitting pipe fittings, the two thin-walled outfitting pipe fittings are respectively clamped and placed in the clamps on both sides, and the ends of the thin-walled outfitting pipe fittings are inserted into the inside of multiple arc-shaped clamps.

[0023] S2 drives two sliders to move synchronously towards each other, causing two thin-walled outfitting tubes to approach each other. When the ends of the two thin-walled outfitting tubes contact each other, the sliders continue to move and will generate a thrust on the slide plate, pushing the slide plate to slide on the slider. When the slide plate slides, it drives the sleeve to move on the second limit rod and generate rotation.

[0024] S3, as the sleeve rotates, it will drive the two clamping plates to rotate and clamp the thin-walled outfitting pipe fitting. At the same time, as the sleeve rotates, it will drive multiple arc-shaped clamping plates to come together and clamp the end of the thin-walled outfitting pipe fitting, so that the two fittings are clamped and fixed after docking.

[0025] S4, in conjunction with the pressure sensor, detects the clamping pressure of the thin-walled outfitting pipe fitting. When the clamping pressure reaches the set value, a signal is transmitted to the motor to cut off the power and stop the slide from moving.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] In use, when butt welding two thin-walled outfitting pipe fittings, the two fittings are respectively clamped and placed in the clamping plates on both sides, and the ends of the fittings are inserted into multiple arc-shaped clamping plates. By driving two sliders to move synchronously towards each other, the two fittings are brought closer together. When the ends of the fittings contact, the sliders continue to move, generating a thrust on the slide plate, which then slides on the slider. As the slide plate slides, it moves the sleeve on the second limit rod and rotates. The rotation of the sleeve causes the two clamping plates to rotate and clamp the fittings. Simultaneously, the rotation of the sleeve causes multiple arc-shaped clamping plates to come together and clamp the ends of the fittings, thus clamping and fixing the two fittings after butt welding. The clamping pressure of the fittings is detected by a pressure sensor. When the clamping pressure reaches the set value, a signal is transmitted to the motor to cut off the power, stopping the slide plate from moving further.

[0028] Therefore, this invention uses multiple arc-shaped clamping plates to clamp the ends of thin-walled outfitting pipe fittings, and also uses clamping plates to clamp the sides of thin-walled outfitting pipe fittings, to achieve synchronous radial and axial constraints on the thin-walled outfitting pipe fittings. This makes the thin-walled outfitting pipe fittings less prone to loosening or deformation during welding, while maintaining coaxiality and improving weld quality. In addition, through the cooperation of pressure sensing plates and motors, the power supply to the motor can be automatically cut off after the thin-walled outfitting pipe fittings are clamped, thus meeting the needs of automated welding of thin-walled outfitting pipe fittings. Attached Figure Description

[0029] Figure 1 A first-view structural schematic diagram of a welding fixture for outfitting cabin equipment.

[0030] Figure 2 This is a second-view structural schematic diagram of a welding fixture for outfitting cabin equipment.

[0031] Figure 3 A welding fixture for outfitting cabin equipment. Figure 2 A schematic diagram of the local structure after decomposition.

[0032] Figure 4 A welding fixture for outfitting cabin equipment. Figure 2 A schematic diagram of the local structure after decomposition.

[0033] Figure 5 A welding fixture for outfitting cabin equipment. Figure 4 A partial structural diagram.

[0034] Figure 6 A welding fixture for outfitting cabin equipment. Figure 5 A schematic diagram of the local structure after decomposition.

[0035] Figure 7 A welding fixture for outfitting cabin equipment. Figure 6 A schematic diagram of a localized explosion structure.

[0036] Figure 8 A welding fixture for outfitting cabin equipment. Figure 7 A partially enlarged structural diagram.

[0037] Figure 9 This is a schematic diagram of the third linkage mechanism of a welding fixture for outfitting cabin equipment.

[0038] Figure 10 This is a front view schematic diagram of a welding fixture for outfitting cabin equipment.

[0039] In the diagram: 1. Guide rail; 2. Slider; 3. Two-way lead screw; 4. Motor; 5. First threaded sleeve; 6. First limiting rod; 7. Second limiting rod; 8. Slide plate; 9. First baffle; 10. Second baffle; 11. Spring; 12. Sleeve; 13. Threaded rod; 14. First bevel gear; 15. Second bevel gear; 16. Second threaded sleeve; 17. Clamping plate; 18. Hinge rod; 19. Pressure sensing plate; 20. Ball bearing; 21. Spiral groove; 22. Rotating rod; 23. First pulley; 24. Second pulley; 25. Belt; 26. Cylinder; 27. Tapered threaded head; 28. Retaining ring; 29. ​​Internally threaded arc-shaped plate; 30. Arc-shaped clamping plate; 31. Limiting block; 32. Slide groove; 33. Bevel gear ring; 34. Third bevel gear; 35. Bracket; 36. Thin-walled outfitting pipe fitting. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Please see Figures 1-10 As one embodiment of the present invention, a welding fixture and clamping method for outfitting cabin equipment includes a guide rail 1, on which two sliders 2 that can move synchronously in opposite directions are slidably engaged. A second limiting rod 7 is provided on the guide rail 1. A sliding plate 8 is slidably engaged on the sliders 2, and the sliding plate 8 is movably sleeved on the second limiting rod 7. An elastic clearance component is provided between the sliders 2 and the sliding plate 8, so that the sliding plate 8 can slide on the sliders 2 when pushed by an external force.

[0042] A sleeve 12 is embedded and engaged on the inner side of the slide plate 8 and is sleeved on the second limiting rod 7. The sleeve 12 and the second limiting rod 7 are connected by a first linkage mechanism. When the sleeve 12 slides on the second limiting rod 7, it will rotate.

[0043] A bracket 35 is provided on the slide plate 8. A clamping plate 17 for clamping the thin-walled outfitting pipe fitting 36 is hinged on the bracket 35. The clamping plate 17 and the sleeve 12 are connected through a second linkage mechanism. When the sleeve 12 rotates, it will drive the two clamping plates 17 to rotate and clamp the thin-walled outfitting pipe fitting 36.

[0044] A cylinder 26 is provided on the support 35. Multiple arc-shaped clamps 30 are provided at one end of the cylinder 26. The arc-shaped clamps 30 are connected to the sleeve 12 through a third linkage mechanism. When the sleeve 12 rotates, it will drive the multiple arc-shaped clamps 30 to move closer to each other and clamp the end of the thin-walled outfitting pipe fitting 36.

[0045] In this embodiment, when welding two thin-walled outfitting pipe fittings 36 together, the two thin-walled outfitting pipe fittings 36 are respectively clamped and placed in the clamping plates 17 on both sides, and the ends of the thin-walled outfitting pipe fittings 36 are inserted into the interior of multiple arc-shaped clamping plates 30. By driving the two sliders 2 to move synchronously towards each other, the two thin-walled outfitting pipe fittings 36 are brought closer to each other. When the ends of the two thin-walled outfitting pipe fittings 36 contact each other, the sliders 2 continue to move and generate a thrust on the slide plate 8, pushing the slide plate 8 to slide on the sliders 2. When the slide plate 8 slides, it drives the sleeve 12 to move on the second limiting rod 7 and generate rotation. When the sleeve 12 rotates, it drives the two clamping plates 17 to rotate and clamp the thin-walled outfitting pipe fittings 36. At the same time, when the sleeve 12 rotates, it drives the multiple arc-shaped clamping plates 30 to move closer to each other and clamp the ends of the thin-walled outfitting pipe fittings 36, so that the two 37 are clamped and fixed after docking.

[0046] As a further embodiment of the present invention, a bidirectional lead screw 3 is rotatably mounted on the guide rail 1, a motor 4 is mounted on the guide rail 1, the bidirectional lead screw 3 is installed at the output end of the motor 4 and is driven to rotate by the motor 4, a first threaded sleeve 5 is mounted on the slider 2, and the slider 2 is threadedly connected to the bidirectional lead screw 3 through the first threaded sleeve 5, and a limiting component is mounted on the guide rail 1 when the slider 2 moves.

[0047] The limiting component includes a first limiting rod 6 disposed on the guide rail 1, and a through hole on the slider 2 with an inner diameter that matches the outer diameter of the first limiting rod 6. The first limiting rod 6 is inserted through the through hole.

[0048] In this embodiment, the motor 4 is electrically connected to an external power source via a wire. Starting the motor 4 drives the bidirectional lead screw 3 to rotate. The first threaded sleeve 5 is connected to the bidirectional lead screw 3 by a threaded transmission, which drives the first threaded sleeve 5 to move horizontally, thereby driving the slider 2 to move horizontally. The first limiting rod 6 is inserted through the through hole of the slider 2 to limit the movement of the slider 2 and prevent it from shifting position during movement.

[0049] As a further embodiment of the present invention, a pressure sensing plate 19 is fixedly installed on one side surface of the clamping plate 17, and the pressure sensing plate 19 is communicatively connected to the motor 4.

[0050] In this embodiment, the pressure sensor 19 works in conjunction with the motor 4 to detect the clamping pressure of the thin-walled outfitting pipe fitting 36. When the clamping pressure reaches the set value, a signal is transmitted to the motor 4 to de-energize the motor 4, so that the slide plate 8 stops moving, thereby meeting the automated welding and clamping requirements of the thin-walled outfitting pipe fitting 36.

[0051] As a further embodiment of the present invention, the elastic clearance component includes a first baffle 9 disposed on the slider 2 and sleeved on the second limiting rod 7, a second baffle 10 sleeved on the second limiting rod 7 disposed on the slide plate 8, and a spring 11 sleeved on the second limiting rod 7 disposed between the first baffle 9 and the second baffle 10.

[0052] In this embodiment, when the ends of the two thin-walled outfitting tubes 36 come into contact, the slider 2 continues to move and exerts a pushing force on the slide plate 8. The slide plate 8 overcomes the elastic force of the spring 11 and squeezes the spring 11, so that the slide plate 8 can slide on the slider 2.

[0053] As a further embodiment of the present invention, the first linkage mechanism includes a ball bearing 20 that is movably embedded and engaged in the inner wall of the sleeve 12 and a spiral groove 21 formed on the surface of the second limiting rod 7. The ball bearing 20 is embedded and engaged in the spiral groove 21 and can roll along the track where the spiral groove 21 is located.

[0054] In this embodiment, when the slide plate 8 moves, it will drive the sleeve 12 to move synchronously on the second limiting rod 7. The ball bearing 20 is embedded and engaged inside the spiral groove 21 and can roll along the track where the spiral groove 21 is located, which can drive the sleeve 12 to rotate when it moves.

[0055] As a further embodiment of the present invention, the second linkage mechanism includes a threaded rod 13 mounted on the bracket 35, which is driven by a gear mechanism to engage with the sleeve 12. When the sleeve 12 rotates, it will drive the threaded rod 13 to rotate. A second threaded sleeve 16 is rotatably mounted on the bracket 35. The second threaded sleeve 16 is sleeved on the threaded rod 13 and threadedly connected to the threaded rod 13. A hinge rod 18 is provided between the clamping plate 17 and the second threaded sleeve 16. The two ends of the hinge rod 18 are respectively hinged to the clamping plate 17 and the second threaded sleeve 16.

[0056] The gear mechanism includes a first bevel gear 14 disposed on the sleeve 12 and a second bevel gear 15 disposed on the threaded rod 13, wherein the first bevel gear 14 meshes with the second bevel gear 15.

[0057] In this embodiment, the rotation of the sleeve 12 will drive the first bevel gear 14 to rotate. The first bevel gear 14 meshes with the second bevel gear 15 to drive the second bevel gear 15 to rotate, thereby driving the threaded rod 13 to rotate. The second threaded sleeve 16 is sleeved on the threaded rod 13 and threadedly connected to the threaded rod 13, thereby driving the second threaded sleeve 16 to move up and down, thereby cooperating with the hinge rod 18 to rotate, driving the clamping plate 17 to clamp and fix the thin-walled outfitting pipe fitting 36.

[0058] As a further embodiment of the present invention, the third linkage mechanism includes a rotating rod 22 rotatably mounted on the bracket 35. The rotating rod 22 and the threaded rod 13 are driven by a belt mechanism. When the threaded rod 13 rotates, it will drive the rotating rod 22 to rotate. A tapered threaded head 27 is rotatably installed inside the cylinder 26. A fixing ring 28 is provided on the inner wall of the cylinder 26. An internally threaded arc-shaped piece 29 that is threadedly connected to the tapered threaded head 27 is slidably engaged on the inner side of the fixing ring 28. The internally threaded arc-shaped piece 29 is fixed to the arc-shaped clamping plate 30. The tapered threaded head 27 and the rotating rod 22 are driven by a bevel gear mechanism. When the rotating rod 22 rotates, it will drive the tapered threaded head 27 to rotate.

[0059] In this embodiment, the rotation of the threaded rod 13 will drive the rotating rod 22 to rotate. The tapered threaded head 27 and the rotating rod 22 are connected by a bevel gear mechanism. When the rotating rod 22 rotates, it will drive the tapered threaded head 27 to rotate. When the tapered threaded head 27 rotates, the internal threaded arc-shaped piece 29 is threadedly connected to the tapered threaded head 27, which drives multiple internal threaded arc-shaped pieces 29 to move and move closer together. This causes the arc-shaped clamping plate 30 at one end of the internal threaded arc-shaped piece 29 to converge and clamp and fix the thin-walled outfitting pipe fitting 36.

[0060] As a further embodiment of the present invention, the belt mechanism includes a first pulley 23 disposed on the rotating rod 22 and a second pulley 24 disposed on the threaded rod 13, and the first pulley 23 and the second pulley 24 are driven by a belt 25.

[0061] The outer wall of the internally threaded arc-shaped piece 29 is provided with a limiting block 31, and the inner wall of the fixing ring 28 is provided with a sliding groove 32, and the limiting block 31 is movably engaged inside the sliding groove 32.

[0062] The bevel gear mechanism includes a bevel gear ring 33 disposed on a conical threaded head 27 and a third bevel gear 34 disposed on a rotating rod 22, wherein the bevel gear ring 33 and the third bevel gear 34 mesh.

[0063] In this embodiment, the rotation of the threaded rod 13 will drive the second pulley 24 to rotate. The first pulley 23 and the second pulley 24 are driven by the belt 25 to rotate the first pulley 23, thereby driving the rotating rod 22 to rotate.

[0064] The limiting block 31 is movable and engaged inside the slide groove 32 to limit the movement of the internal thread arc-shaped piece 29 on the tapered thread head 27;

[0065] When the rotating rod 22 rotates, it will drive the third bevel gear 34 to rotate. The third bevel gear 34 meshes with the bevel gear ring 33 to drive the bevel gear ring 33 to rotate, thereby driving the tapered thread head 27 to rotate.

[0066] The working principle of this invention is as follows: When butt-welding two thin-walled outfitting pipe fittings 36, the two fittings are first clamped and placed inside the clamping plates 17 on both sides, and the ends of the fittings are inserted into multiple arc-shaped clamping plates 30. By driving two sliders 2 to move synchronously towards each other, the two thin-walled outfitting pipe fittings 36 are brought closer together. When the ends of the two fittings 36 contact each other, the continued movement of the sliders 2 generates a thrust on the sliding plate 8, pushing it to slide on the sliders 2. As the sliding plate 8 slides, it causes the sleeve 12 to move on the second limiting rod 7, generating… The sleeve 12 rotates, causing the two clamping plates 17 to rotate and clamp the thin-walled outfitting pipe fitting 36. At the same time, the sleeve 12 rotates, causing multiple arc-shaped clamping plates 30 to move closer together and clamp the ends of the thin-walled outfitting pipe fitting 36, so that the two 37 are clamped and fixed after docking. The clamping pressure of the thin-walled outfitting pipe fitting 36 is detected by the pressure sensing plate 19. When the clamping pressure reaches the set value, the signal is transmitted to the motor 4 to cut off the power to the motor 4, so that the slide plate 8 stops moving. At this time, the ends of the thin-walled outfitting pipe fitting 36 are docked and in a stationary state, which is convenient for welding.

[0067] By using multiple arc-shaped clamping plates 30 to clamp the ends of the thin-walled outfitting pipe fitting 36, and by using clamping plates 17 to clamp the sides of the thin-walled outfitting pipe fitting 36, the radial and axial synchronous constraints of the thin-walled outfitting pipe fitting 36 can be achieved. This makes the thin-walled outfitting pipe fitting 36 less prone to loosening or deformation during welding, while maintaining coaxiality and improving weld quality. In addition, by using pressure sensing plates 19 in conjunction with motor 4, the power supply to motor 4 can be automatically cut off after the thin-walled outfitting pipe fitting 36 is clamped, thereby meeting the automated welding requirements of the thin-walled outfitting pipe fitting 36.

[0068] The above embodiments are exemplary and not restrictive. Therefore, any technical solutions that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention are included within the scope of the present invention.

Claims

1. A welding fixture for outfitting cabin equipment, comprising a guide rail (1), characterized in that, Two sliders (2) that can move synchronously in opposite directions are slidably engaged on the guide rail (1). A second limiting rod (7) is provided on the guide rail (1). A sliding plate (8) is slidably engaged on the slider (2). The sliding plate (8) is movably sleeved on the second limiting rod (7). An elastic clearance component is provided between the slider (2) and the sliding plate (8). The elastic clearance component allows the sliding plate (8) to slide on the slider (2) when pushed by an external force. The inner side of the slide plate (8) is fitted with a sleeve (12) that is sleeved on the second limiting rod (7). The sleeve (12) and the second limiting rod (7) are connected by a first linkage mechanism. The sleeve (12) will rotate when it slides on the second limiting rod (7). The slide plate (8) is provided with a bracket (35), and the bracket (35) is hinged with a clamping plate (17) for clamping the thin-walled outfitting pipe (36). The clamping plate (17) and the sleeve (12) are connected by a second linkage mechanism. When the sleeve (12) rotates, it will drive the two clamping plates (17) to rotate and clamp the thin-walled outfitting pipe (36). The support (35) is provided with a cylinder (26), and a plurality of arc-shaped clamps (30) with equal angles and circumferential distribution are provided at one end of the cylinder (26). The arc-shaped clamps (30) and the sleeve (12) are connected by a third linkage mechanism. When the sleeve (12) rotates, it will drive the plurality of arc-shaped clamps (30) to move closer to each other to clamp the end of the thin-walled outfitting pipe fitting (36). The second linkage mechanism includes a threaded rod (13) rotatably mounted on a bracket (35). The threaded rod (13) and the sleeve (12) are driven by a gear mechanism. When the sleeve (12) rotates, it will drive the threaded rod (13) to rotate. A second threaded sleeve (16) is rotatably mounted on the bracket (35). The second threaded sleeve (16) is sleeved on the threaded rod (13) and threadedly connected to the threaded rod (13). A hinge rod (18) is provided between the clamping plate (17) and the second threaded sleeve (16). The two ends of the hinge rod (18) are hinged to the clamping plate (17) and the second threaded sleeve (16) respectively. The gear mechanism includes a first bevel gear (14) disposed on a sleeve (12) and a second bevel gear (15) disposed on a threaded rod (13), wherein the first bevel gear (14) meshes with the second bevel gear (15); The third linkage mechanism includes a rotating rod (22) rotatably mounted on a bracket (35). The rotating rod (22) and the threaded rod (13) are driven by a belt mechanism. When the threaded rod (13) rotates, it will drive the rotating rod (22) to rotate. A tapered threaded head (27) is rotatably installed inside the cylinder (26). A fixing ring (28) is provided on the inner wall of the cylinder (26). An internal threaded arc-shaped piece (29) that is threadedly connected to the tapered threaded head (27) is slidably engaged on the inner side of the fixing ring (28). The internal threaded arc-shaped piece (29) is fixed to the arc-shaped clamp (30). The tapered threaded head (27) and the rotating rod (22) are driven by a bevel gear mechanism. When the rotating rod (22) rotates, it will drive the tapered threaded head (27) to rotate. The belt mechanism includes a first pulley (23) mounted on a rotating rod (22) and a second pulley (24) mounted on a threaded rod (13), and the first pulley (23) and the second pulley (24) are driven by a belt (25); The outer wall of the internally threaded arc-shaped piece (29) is provided with a limiting block (31), and the inner wall of the fixing ring (28) is provided with a sliding groove (32). The limiting block (31) is movably engaged inside the sliding groove (32). The bevel gear mechanism includes a bevel gear ring (33) disposed on a conical threaded head (27) and a third bevel gear (34) disposed on a rotating rod (22), wherein the bevel gear ring (33) and the third bevel gear (34) mesh.

2. The welding fixture for outfitting cabin equipment according to claim 1, characterized in that, A bidirectional lead screw (3) is rotatably mounted on the guide rail (1). A motor (4) is mounted on the guide rail (1). The bidirectional lead screw (3) is installed at the output end of the motor (4) and is driven to rotate by the motor (4). A first threaded sleeve (5) is mounted on the slider (2). The slider (2) is threadedly connected to the bidirectional lead screw (3) through the first threaded sleeve (5). A limiting component is mounted on the guide rail (1) when the slider (2) moves. The limiting component includes a first limiting rod (6) disposed on the guide rail (1), and the slider (2) has a through hole with an inner diameter that matches the outer diameter of the first limiting rod (6), and the first limiting rod (6) is inserted through the through hole.

3. A welding fixture for outfitting cabin equipment according to claim 2, characterized in that, A pressure sensor (19) is fixedly installed on one side surface of the clamp (17), and the pressure sensor (19) is connected to the motor (4) for communication.

4. A welding fixture for outfitting cabin equipment according to claim 1, characterized in that, The elastic clearance component includes a first baffle (9) disposed on the slider (2) and sleeved on the second limiting rod (7), a second baffle (10) sleeved on the second limiting rod (7) disposed on the slide plate (8), and a spring (11) sleeved on the second limiting rod (7) disposed between the first baffle (9) and the second baffle (10).

5. A welding fixture for outfitting cabin equipment according to claim 1, characterized in that, The first linkage mechanism includes a ball (20) that is movably embedded and engaged in the inner wall of the sleeve (12) and a spiral groove (21) formed on the surface of the second limiting rod (7). The ball (20) is embedded and engaged in the spiral groove (21) and can roll along the track where the spiral groove (21) is located.

6. A method for clamping a welding fixture for outfitting cabin equipment as described in any one of claims 1-5, characterized in that, Includes the following steps, S1, when butt welding two thin-walled outfitting pipe fittings (36), the two thin-walled outfitting pipe fittings (36) are respectively clamped and placed in the clamps (17) on both sides, and the ends of the thin-walled outfitting pipe fittings (36) are inserted into the multiple arc-shaped clamps (30). S2, drive the two sliders (2) to move synchronously towards each other, causing the two thin-walled outfitting pipes (36) to approach each other. When the ends of the two thin-walled outfitting pipes (36) contact each other, the slider (2) continues to move and will generate a thrust on the slide plate (8), pushing the slide plate (8) to slide on the slider (2). When the slide plate (8) slides, it drives the sleeve (12) to move on the second limit rod (7) and generate rotation. S3, as the sleeve (12) rotates, it will drive the two clamping plates (17) to rotate and clamp the thin-walled outfitting pipe fitting (36). At the same time, as the sleeve (12) rotates, it will drive multiple arc-shaped clamping plates (30) to come together and clamp the end of the thin-walled outfitting pipe fitting (36), so that the two thin-walled outfitting pipe fittings (36) are clamped and fixed after docking. S4, together with the pressure sensor (19), detects the clamping pressure of the thin-walled outfitting pipe fitting (36). When the clamping pressure reaches the set value, the signal is transmitted to the motor (4) to cut off the power to the motor (4) so ​​that the slide plate (8) stops moving.

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