Three-way pipe welding clamp and laser welding equipment

Abstract

The utility model belongs to the technical field of three-way pipe welding, and discloses a three-way pipe welding clamp and laser welding equipment. The laser welding equipment comprises a three-way pipe welding clamp, and the three-way pipe welding clamp comprises a support, a rotating mechanism and a pressing mechanism; the rotating mechanism comprises a clamping seat, the clamping seat is rotatably arranged on the support, and the clamping seat is configured to be capable of clamping the three-way base; the pressing mechanism comprises a connecting base and a pressing base rotationally arranged on the lower side of the connecting base, the connecting base is arranged on the support in a sliding mode in the vertical direction, and the pressing base is located over the clamping base and is configured to be capable of pressing the pipe fitting. According to the three-way pipe welding clamp, the problem that the position is prone to deviation due to manual fixing can be effectively solved, the positioning precision is high, and the welding quality and the welding efficiency of a three-way pipe are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of tee pipe welding technology, and in particular to a tee pipe welding fixture and laser welding equipment. Background Technology

[0002] Welding technology is a crucial connection technique in the research and production of civil aircraft. It reduces the processing difficulty of large and complex structural components and facilitates lightweight aircraft design. A tee pipe, a pipe fitting with three openings, is widely used in the piping systems of civil aircraft. A tee pipe typically consists of a tee base and a fitting, with the fitting connected to the tee base's ports via welding. Currently, the positioning and alignment of the tee base and fitting are primarily achieved manually. However, this manual fixing method is prone to positional misalignment, affecting welding quality and resulting in low welding efficiency.

[0003] Therefore, there is an urgent need to provide a tee pipe welding fixture and laser welding equipment to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a tee pipe welding fixture with high positioning accuracy, which can improve welding quality and welding efficiency.

[0005] Another objective of this invention is to provide a laser welding device that, by applying the aforementioned three-way pipe welding fixture, can improve welding quality and welding efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A tee pipe welding fixture is provided, wherein the tee pipe includes a tee base and a pipe fitting capable of engaging with the port of the tee base, and the tee pipe welding fixture includes:

[0008] support;

[0009] A rotating mechanism includes a clamping seat rotatably mounted on the bracket, the clamping seat being configured to clamp the tee base;

[0010] A clamping mechanism includes a connecting seat and a clamping seat rotatably disposed below the connecting seat. The connecting seat is slidably disposed on the bracket in the vertical direction. The clamping seat is located directly above the clamping seat and is configured to clamp the pipe fitting.

[0011] As an optional embodiment, the rotating mechanism further includes a drive assembly, the drive assembly comprising:

[0012] The motor is mounted on the bracket;

[0013] The first pulley and the second pulley are spaced apart in the horizontal direction, and the first pulley is connected to the output shaft of the motor;

[0014] A timing belt is wound around the outer periphery of the first pulley and the second pulley, and is tensioned by the first pulley and the second pulley together;

[0015] The drive bearing is mounted and fixed on the bracket.

[0016] A rotating shaft is provided with the drive bearing along the vertical direction, and one end of the rotating shaft is fixedly connected to the clamping seat, and the other end is fixedly connected to the second pulley.

[0017] As an optional solution, both the clamping seat and the rotating shaft are provided with clearance holes at their centers for the pipe fitting to pass through.

[0018] As an optional solution, a photoelectric sensor is provided on the bracket, the photoelectric sensor is communicatively connected to the motor, and a detection component that can be detected by the photoelectric sensor is provided on the top periphery of the rotating shaft.

[0019] As an optional solution, the connecting seat includes an adapter plate, a support plate, and a driven bearing. The adapter plate is slidably disposed on the bracket in the vertical direction. The support plate is horizontally disposed and fixedly connected to the adapter plate. The driven bearing passes through and is fixedly disposed on the support plate. The clamping seat passes through and is fixedly disposed on the inner ring of the driven bearing.

[0020] As an alternative, a slider is connected to the adapter plate, and a guide rail extending along the vertical direction is fixedly connected to the bracket, with the slider slidingly engaging with the guide rail.

[0021] As an optional solution, the clamping mechanism further includes a locking assembly, which includes a connecting block and a handle. The connecting block is rotatably connected to the connecting seat, and the handle is fixedly connected to the connecting block.

[0022] The bracket is provided with a limiting plate on the side near the pressing seat. The limiting plate is provided with a sliding groove extending along the vertical direction and a plurality of limiting grooves perpendicular to and connected to the sliding groove. The plurality of limiting grooves are arranged at intervals along the vertical direction. The handle can slide along the sliding groove or be stopped in the limiting groove.

[0023] As an optional solution, the clamping seat includes a support base, a quick clamp, and at least one baffle. The support base is rotatably mounted on the bracket and is used to support the tee base. The quick clamp and at least one baffle are spaced apart on the periphery of the support base and cooperate to clamp the tee base.

[0024] As an optional solution, the bracket includes a base plate, a lower support rod, a receiving plate, an upper support rod, and an upper frame. The receiving plate is located above the base plate, the lower support rod is connected between the base plate and the receiving plate, the clamping seat is rotatably mounted on the receiving plate, the upper support rod is erected on the upper side of the receiving plate, the upper frame is connected to the top of the upper support rod, and the connecting seat is slidably mounted on the upper frame in the vertical direction.

[0025] The laser welding equipment includes a laser welding device and the aforementioned tee pipe welding fixture, wherein the laser welding device is used to weld and fix the tee base and the pipe fitting clamped on the tee pipe welding fixture.

[0026] The beneficial effects of this utility model are:

[0027] This utility model provides a T-shaped pipe welding fixture. When welding a T-shaped base and a pipe fitting, the T-shaped base is first clamped onto a clamping seat with one port facing upwards. The pipe fitting to be welded is then aligned with the upward-facing port of the T-shaped base, ensuring coaxiality. The connecting seat is then adjusted to slide down the support, causing the clamping seat to press the pipe fitting firmly against the port of the T-shaped base, thus clamping and fixing the T-shaped pipe. Welding is then initiated. During welding, the clamping seat is rotated horizontally, causing the T-shaped base to rotate and the pipe fitting to rotate. Simultaneously, the clamping seat rotates, allowing the welding of the connection between the T-shaped pipe and the pipe fitting to be completed while the laser welding device remains stationary. This T-shaped pipe welding fixture effectively avoids the problem of positional displacement caused by manual fixing, provides high positioning accuracy, and effectively improves the welding quality and efficiency of the T-shaped pipe.

[0028] This utility model also provides a laser welding device, which can improve the welding quality and efficiency of tee pipes by applying the above-mentioned tee pipe welding fixture. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of the tee pipe welding fixture provided by this utility model;

[0030] Figure 2 This is a partial structural diagram of the tee pipe welding fixture provided by this utility model. Figure 1 ;

[0031] Figure 3 This is a schematic diagram of the rotating mechanism provided by this utility model;

[0032] Figure 4 This is a partial structural diagram of the tee pipe welding fixture provided by this utility model. Figure 2 ;

[0033] Figure 5This is a schematic diagram of the structure of the tee pipe on the clamp when welding one of the first pipe fittings, as provided by this utility model;

[0034] Figure 6 This is a schematic diagram of the structure of the tee pipe on the clamp when welding another first pipe fitting, as provided by this utility model;

[0035] Figure 7 This is a schematic diagram of the structure of the tee pipe on the clamp when welding the second pipe fitting, provided by this utility model;

[0036] Figure 8 yes Figure 5 A magnified view of a portion of point A in the middle.

[0037] In the picture:

[0038] 100. Tee; 101. Tee base; 102. Fitting; 1021. First fitting; 1022. Second fitting; 103. Weld;

[0039] 10. Bracket; 11. Base plate; 12. Lower support rod; 13. Support plate; 14. Upper support rod; 15. Upper frame; 16. Limiting plate; 161. Slide groove; 162. Limiting groove;

[0040] 20. Rotating mechanism; 21. Clamping seat; 211. Support seat; 212. Quick clamp; 213. Baffle; 22. Drive assembly; 221. Motor; 222. First pulley; 223. Second pulley; 224. Synchronous belt; 225. Drive bearing; 226. Shaft; 227. Clearance hole; 23. Photoelectric sensor; 24. Item to be inspected;

[0041] 30. Clamping mechanism; 31. Connecting seat; 311. Adapter plate; 312. Support plate; 313. Driven bearing; 32. Clamping seat; 33. Slider; 34. Guide rail; 35. Locking assembly; 351. Connecting block; 352. Handle; 353. Connecting piece. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0046] This embodiment provides a tee pipe welding fixture for welding and positioning a tee pipe 100. (Refer to...) Figure 7 The tee pipe 100 includes a tee base 101 and a fitting 102 that can mate with the port of the tee base 101. The tee base 101 has three ports facing different directions, and a fitting 102 needs to be welded to each port. The tee pipe welding fixture can provide auxiliary positioning between the tee base 101 and the fitting 102, and, in conjunction with a laser welding device, weld the connection between the tee base 101 and the fitting 102.

[0047] Specifically, such as Figure 1As shown, the tee pipe welding fixture includes a bracket 10, a rotating mechanism 20, and a clamping mechanism 30. The bracket 10 is erected on the ground or a table. The rotating mechanism 20 includes a clamping seat 21, which is rotatably mounted on the bracket 10 and configured to clamp the tee base 101. The clamping mechanism 30 includes a connecting seat 31 and a clamping seat 32 rotatably mounted on the lower side of the connecting seat 31. The connecting seat 31 is slidably mounted on the bracket 10 in the vertical direction. The clamping seat 32 is located directly above the clamping seat 21 and is configured to clamp the pipe fitting 102.

[0048] Combined Figure 5 When welding the tee base 101 and the pipe fitting 102, first clamp the tee base 101 onto the clamping seat 21, with one port of the tee base 101 facing upwards. Then, align the pipe fitting 102 to be welded onto the upward-facing port of the tee base 101, ensuring that the two are coaxial. Next, adjust the connecting seat 31 to slide down along the bracket 10, so that the clamping seat 32 presses the pipe fitting 102 against the port of the tee base 101, thus completing the clamping and fixing of the tee pipe 100. Then, start welding. During connection, the clamping seat 21 is rotated in the horizontal plane, causing the tee base 101 to drive the pipe fitting 102 to rotate. Simultaneously, the clamping seat 32 also rotates. Thus, in a mode where the tee pipe 100 rotates and the laser welding device remains stationary, the welding at the connection between the tee pipe 100 and the pipe fitting 102 is completed. After one pipe fitting 102 is welded, the tee base 101 is flipped and re-clamped onto the clamping seat 21, so that the other two ends face upwards, and the welding of the other two pipe fittings 102 is completed sequentially. This tee pipe welding fixture effectively avoids the problem of easy positional displacement caused by manual fixing, has high positioning accuracy, and effectively improves the welding quality and efficiency of the tee pipe 100.

[0049] In an optional implementation, such as Figure 1 As shown, the support frame 10 includes a base plate 11, lower support rods 12, a receiving plate 13, an upper support rod 14, and an upper frame 15. The receiving plate 13 is located above the base plate 11. The lower support rods 12 connect the base plate 11 and the receiving plate 13. The clamping seat 21 is rotatably mounted on the receiving plate 13. Specifically, four lower support rods 12 are connected between the base plate 11 and the receiving plate 13, and the four lower support rods 12 are respectively connected to the four corners of the base plate 11 and the receiving plate 13, ensuring the stability of the base of the support frame 10. The upper support rod 14 is erected on the upper side of the receiving plate 13 and close to the edge of the receiving plate 13. The upper frame 15 is a square frame and is connected to the top of the upper support rod 14. The connecting seat 31 is slidably mounted on the side of the upper frame 15 away from the upper support rod 14 in the vertical direction. The support frame 10 has a simple structure, reasonable layout, and stable and reliable overall structure.

[0050] like Figure 2As shown, the clamping base 21 includes a support base 211, a quick clamp 212, and at least one baffle 213. The support base 211 is rotatably mounted on the receiving plate 13 of the bracket 10 and is used to support the tee base 101. The quick clamp 212 and at least one baffle 213 are spaced apart around the support base 211 and cooperate to clamp the tee base 101. The quick clamp 212 clamps and releases the tee base 101 by pushing and pulling its handle. For example, the tee base 101 is placed on the support plate 312 and positioned between the baffle 213 and the quick clamp 212. Then, the handle of the quick clamp 212 is pushed to firmly clamp the tee base 101 between the baffle 213 and the quick clamp 212. After welding is completed, the handle of the quick clamp 212 is pulled to release the tee base 101. The direction of the tee base 101 is then reversed to weld the next pipe fitting 102, or the welded tee pipe 100 is removed and the next tee base 101 to be welded is placed in it. This allows for quick clamping and disassembly of the tee base 101, facilitating operation. The quick clamp 212 is a common structure in the prior art, and its specific structure and working principle will not be described in detail here.

[0051] like Figure 2 As shown, in this embodiment, two baffles 213 are provided. The two baffles 213 cooperate with the quick clamp 212 to achieve stable clamping of the three-way base 101. In other embodiments, the baffles 213 can also be set to one, three or more, which can be flexibly set according to actual needs, and no specific limitation is made here.

[0052] Combination Figure 2 and Figure 3The rotating mechanism 20 also includes a drive assembly 22, which includes a motor 221, a first pulley 222, a second pulley 223, a synchronous belt 224, a drive bearing 225, and a rotating shaft 226. The motor 221 is fixed to the lower side of the support plate 13 of the bracket 10, and the output shaft of the motor 221 is arranged upward. The first pulley 222 and the second pulley 223 are spaced apart in the horizontal direction. The first pulley 222 is connected to the output shaft of the motor 221. The synchronous belt 224 is wrapped around the outer periphery of the first pulley 222 and the second pulley 223 and is tensioned by the first pulley 222 and the second pulley 223. The drive bearing 225 is fixed to the support plate 13 of the bracket 10. The rotating shaft 226 passes through the drive bearing 225 in the vertical direction, and one end of the rotating shaft 226 is fixedly connected to the support seat 211 of the clamping seat 21, and the other end is fixedly connected to the second pulley 223. Motor 221 drives first pulley 222 to rotate. Under the tension of synchronous belt 224, it drives second pulley 223 to rotate. Second pulley 223 drives rotating shaft 226 to rotate. Rotating shaft 226 drives clamping seat 21 to rotate, thereby driving the tee base 101 and pipe fitting 102 on it to rotate to complete the welding process. Drive bearing 225 enables rotating shaft 226 to rotate smoothly and reduce friction loss. By setting the above-mentioned drive assembly 22, the clamping seat 21 can be automatically rotated without manual rotation, which helps to improve the automation level of the tee pipe welding fixture, improve welding efficiency, and the drive assembly 22 can drive the clamping seat 21 to rotate at a uniform speed, which helps to improve welding accuracy and welding quality.

[0053] like Figure 2 and Figure 3 As shown, a photoelectric sensor 23 is installed on the bracket 10. Specifically, the photoelectric sensor 23 is a slotted photoelectric sensor. The photoelectric sensor 23 is communicatively connected to the motor 221 via a control module. A detection component 24, detectable by the photoelectric sensor 23, is located on the top periphery of the rotating shaft 226. During each welding operation, when the clamping seat 21 rotates exactly one revolution, the laser welding device completes the welding at the connection between the tee pipe 100 and the fitting 102, forming a weld seam 103. At this time, the detection component 24 also passes through the slot of the photoelectric sensor 23, blocking the light. The photoelectric sensor 23 transmits a feedback signal to the control module, which then controls the motor 221 to stop rotating, thus completing the welding of one fitting 102. The control module is existing technology; any control module and electrical connection method capable of achieving the above effects can be used in this application, and will not be elaborated further here.

[0054] like Figure 2 As shown, both the clamping base 21 and the rotating shaft 226 have clearance holes 227 at their centers for the pipe fitting 102 to pass through. (Reference) Figure 7In this embodiment, the three pipe fittings 102 are divided into two first pipe fittings 1021 and one second pipe fitting 1022. The first pipe fitting 1021 is a round pipe with a diameter of 38mm and a length of 220mm, and the second pipe fitting 1022 is a round pipe with a diameter of 62mm and a length of 380mm. Both are made of 6061 aluminum alloy and have a thickness of 1mm. The two first pipe fittings 1021 are located on the same axis and face opposite directions. The second pipe fitting 1022 is arranged perpendicular to the two first pipe fittings 1021. The three pipe fittings 102 are welded sequentially, and the welding order is not limited. For example... Figure 6 As shown, when one of the first pipe fittings 1021 is welded and another first pipe fitting 1021 needs to be welded, the direction of the tee base 101 needs to be reversed so that the port of the tee pipe 100 that is connected to the first pipe fitting 1021 to be welded faces upward, and the first pipe fitting 1021 that has been welded faces downward. At this time, the first pipe fitting 1021 that has been welded extends through the clearance hole 227 into the underside of the receiving plate 13 to avoid interference.

[0055] In an optional embodiment, such as Figure 4 As shown, the connecting seat 31 includes an adapter plate 311, a support plate 312, and a driven bearing 313. The adapter plate 311 is slidably mounted on the bracket 10 in the vertical direction. The support plate 312 is horizontally mounted and fixedly connected to the adapter plate 311. The driven bearing 313 is fixedly mounted on the support plate 312, and the clamping seat 32 is fixedly mounted on the inner ring of the driven bearing 313. Since the clamping seat 32 presses the pipe 102 onto the tee base 101, when the drive assembly 22 drives the clamping seat 21 to rotate, the tee base 101 on the clamping seat 21 can drive the pipe 102 to rotate, and the pipe 102 can drive the clamping seat 32 to rotate. The driven bearing 313 enables the clamping seat 32 to rotate smoothly, reducing frictional loss.

[0056] like Figure 4 As shown, a slider 33 is connected to the adapter plate 311, and a guide rail 34 extending in the vertical direction is fixedly connected to the upper frame 15 of the bracket 10. The slider 33 and the guide rail 34 are slidably engaged. In this way, by setting the slider 33 and the guide rail 34, the connecting seat 31 is driven to move the clamping seat 32 up and down, so that the clamping seat 32 is pressed against the pipe fitting 102.

[0057] In an optional embodiment, such as Figure 4As shown, the clamping mechanism 30 also includes a locking assembly 35, which includes a connecting block 351 and a handle 352. The connecting block 351 is rotatably connected to the top of the adapter plate 311 of the connecting seat 31 via a connector 353. The handle 352 is fixedly connected to the connecting block 351. A limiting plate 16 is provided on the side of the bracket 10 near the clamping seat 32. The limiting plate 16 has a sliding groove 161 extending in the vertical direction and multiple limiting slots 162 perpendicular to and communicating with the sliding groove 161. The multiple limiting slots 162 are arranged at intervals in the vertical direction. The handle 352 can slide along the sliding groove 161 or be stopped in the limiting slot 162. The connector 353 can be a bolt. The bolt passes through the connecting block 351 from top to bottom and is threadedly connected to the adapter plate 311. However, the bolt does not lock the connecting block 351, but leaves a certain amount of slack, so that the connecting block 351 can rotate in the horizontal plane around the axis of the bolt.

[0058] When the height of the clamping seat 32 needs to be adjusted, the connecting block 351 is rotated by turning the handle 352, causing the handle 352 to rotate into the slide groove 161. The handle 352 can slide along the slide groove 161, and the height of the clamping seat 32 can be adjusted by sliding the slider 33 along the guide rail 34. When the clamping seat 32 clamps or releases the pipe fitting 102, it needs to be fixed at a certain height. At this time, the connecting block 351 is rotated by turning the handle 352 in the opposite direction, causing the handle 352 to lock into the corresponding limiting groove 162, thus fixing the clamping seat 32 at the preset height. By setting limiting grooves 162 of different heights, the clamping seat 32 can be fixed at different heights, thus adapting to pipe fittings 102 of different heights, and the operation is convenient and quick.

[0059] In this embodiment, three limiting grooves 162 are provided, and the three limiting grooves 162 are arranged at intervals in the vertical direction, which can meet the different height requirements of the pressing seat 32. In other embodiments, the limiting grooves 162 can also be provided as two, four or more, which can be flexibly set according to actual needs, and no specific limitation is made here.

[0060] This embodiment also provides a laser welding device, including a laser welding apparatus and the aforementioned tee pipe welding fixture. The laser welding apparatus is used to weld and fix the tee base 101 and the pipe fitting 102, which are clamped on the tee pipe welding fixture. During welding, the tee pipe 100 rotates while the laser welding apparatus remains stationary to complete the laser welding at the connection between the tee pipe 100 and the pipe fitting 102. The laser welding device provided in this embodiment, by applying the aforementioned tee pipe welding fixture, can improve the welding quality and welding efficiency of the tee pipe 100.

[0061] Specifically, the laser welding device consists of a laser welding head mounted on the end of a robotic arm. The laser welding head performs welding by periodically oscillating a laser beam L, supplemented by a filler wire S. The oscillating laser beam L periodically acts on the filler wire S to complete the welding, ensuring a continuous and uniform weld formation 103. During the laser welding process, a shielding gas G is introduced through a gas nozzle to protect the weld surface from oxidation, giving the weld 103 a metallic luster. The aforementioned laser welding head is existing technology, and its specific structure will not be described in detail here.

[0062] Understandably, welding technology is a crucial joining technique in the research and production of civil aircraft. It reduces the processing difficulty of large and complex structural components and facilitates lightweight aircraft design. Currently, civil aircraft fuel, environmental control, and other systems contain a large number of thin-walled aluminum alloy tee pipes 100, which are welded using traditional manual tungsten inert gas welding (TIG welding). However, TIG welding suffers from dispersed heat sources, high heat input, and significant welding deformation, resulting in a substantial decrease in performance at the connection between the tee base 101 and the pipe fitting 102 compared to the base material.

[0063] In this embodiment, a oscillating laser wire-filling welding process is employed. Laser welding uses a focused laser as a heat source, which has advantages such as concentrated energy, low heat input, and high welding speed. Therefore, the residual stress and deformation of the weldment are small, and the weld seam 103 and heat-affected zone are narrow, enabling high-precision welding. Simultaneously, due to the wire-filling process, laser wire-filling welding has a certain tolerance for assembly misalignment during actual welding, making it more suitable for actual welding sites. Furthermore, by adjusting the alloying elements of the filler wire, the metallurgical composition and mechanical properties at the connection between the tee base 101 and the pipe fitting 102 can be improved.

[0064] For example, the process of welding the tee pipe 100 using the above-described oscillating laser wire-filling welding process, in the order of welding the two first pipe fittings 1021 first and then welding the second pipe fitting 1022, is described in detail, including the following steps:

[0065] 1) Pre-welding cleaning: Immerse the welding ends of the tee base 101 and each pipe fitting 102 in 20% dilute nitric acid to remove surface oxide scale, oil, impurities, etc., then rinse in clean water and finally dry.

[0066] 2) 100mm positioning clamping of the tee pipe: such as Figure 5 As shown, first, fix the tee base 101 on the clamping seat 21 with the 38mm diameter port facing upward. Then, connect the first pipe 1021 to the upward port of the tee base 101, ensuring that the two are coaxial. Then, adjust the connecting seat 31 to slide down along the bracket 10 so that the clamping seat 32 presses the first pipe 1021 onto the port of the tee base 101.

[0067] 3) Welding teaching: Adjust the laser focus position of the laser welding head, adjust the angle and distance between the welding head, the gas nozzle and the weld 103, turn on the red light indicator of the laser, complete the welding program teaching, and ensure that the welding process is without deviation;

[0068] 4) Start the welding process: Using the method of rotating the tee tube 100 and keeping the laser welding head stationary, control the laser beam to weld the joint in a rotary oscillating manner according to the preset welding process parameters, and complete the first weld 103.

[0069] 5)Reference Figure 6 Loosen the clamping seat 32 and the clamping seat 21, flip the tee base 101 so that the other 38mm diameter port faces upward, and the already welded first pipe fitting 1021 passes downward through the clearance hole 227 and is re-fixed on the clamping seat 21. Clamp the second first pipe fitting 1021 according to step 2), and then repeat steps 3) to 4) to complete the second weld 103.

[0070] 6)Reference Figure 7 Loosen the clamping seat 32 and the clamping seat 21, flip the tee base 101 so that the 62mm diameter port faces upward, and re-fix it on the clamping seat 21. Clamp the second pipe fitting 1022 according to step 2), and then repeat steps 3) to 4) to complete the third weld 103 and complete the welding of the entire tee pipe 100.

[0071] In step 4), the preset welding process parameters include: the laser wavelength is 1064nm, the laser spot size is 100um, and the laser beam oscillation amplitude is 0.3mm.

[0072] Optionally, the oscillation path of the laser beam can be circular, figure-eight, infinite, etc.

[0073] like Figure 8 As shown, the angle α between the laser beam L and the plane (horizontal plane) where the annular weld 103 is located is 2° to 4°. The welding wire S and the shielding gas G are distributed on both sides of the laser beam L and are located in the same circumferential plane as the laser beam L. The angle β between the welding wire S and the shielding gas G and the laser beam L is 45°.

[0074] Optionally, the diameter of the welding wire is 1 mm and the grade is 4043.

[0075] Optionally, during the welding process in step 4), the output shielding gas is argon, the flow rate is 15-20 L / min, the welding output power is 1700-1800 W, the welding speed is 3.0-4.8 m / min, and the wire feeding speed is 1.6-2.4 m / min.

[0076] In summary, the laser welding equipment provided in this embodiment employs an oscillating laser wire-filling welding process. Combined with the aforementioned tee pipe welding fixture, the tee pipe 100 rotates while the laser welding device remains stationary, completing the welding at the connection between the tee pipe 100 and the fitting 102. The resulting tee pipe 100 exhibits minimal welding deformation, meeting the quality requirements of the pipe butt ring weld, while also effectively controlling the welding penetration depth, improving the quality of the weld 103, and reducing the welding deformation of the fitting 102.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A welding fixture for a tee pipe, the tee pipe (100) comprising a tee base (101) and a fitting (102) capable of engaging with the port of the tee base (101), characterized in that, The tee pipe welding fixture includes: Frame (10); The rotating mechanism (20) includes a clamping seat (21) rotatably mounted on the bracket (10) and configured to clamp the three-way base (101). The clamping mechanism (30) includes a connecting seat (31) and a clamping seat (32) rotatably disposed on the lower side of the connecting seat (31). The connecting seat (31) is slidably disposed on the bracket (10) in the vertical direction. The clamping seat (32) is located directly above the clamping seat (21) and is configured to clamp the pipe fitting (102).

2. The tee pipe welding fixture according to claim 1, characterized in that, The rotating mechanism (20) further includes a drive assembly (22), which comprises: The motor (221) is mounted on the bracket (10); The first pulley (222) and the second pulley (223) are arranged at intervals in the horizontal direction, and the first pulley (222) is connected to the output shaft of the motor (221); A synchronous belt (224) is wrapped around the outer periphery of the first pulley (222) and the second pulley (223), and is tensioned by the first pulley (222) and the second pulley (223). The drive bearing (225) is mounted and fixed on the bracket (10); A rotating shaft (226) is provided with a drive bearing (225) passing through it in the vertical direction. One end of the rotating shaft (226) is fixedly connected to the clamping seat (21), and the other end is fixedly connected to the second pulley (223).

3. The tee pipe welding fixture according to claim 2, characterized in that, Both the clamping seat (21) and the rotating shaft (226) are provided with clearance holes (227) for the pipe (102) to pass through.

4. The tee pipe welding fixture according to claim 2, characterized in that, A photoelectric sensor (23) is provided on the bracket (10). The photoelectric sensor (23) is communicatively connected to the motor (221). The top periphery of the rotating shaft (226) is provided with a detection component (24) that can be detected by the photoelectric sensor (23).

5. The tee pipe welding fixture according to any one of claims 1-4, characterized in that, The connecting seat (31) includes an adapter plate (311), a support plate (312), and a driven bearing (313). The adapter plate (311) is slidably disposed on the bracket (10) in the vertical direction. The support plate (312) is horizontally disposed and fixedly connected to the adapter plate (311). The driven bearing (313) is fixedly disposed on the support plate (312). The clamping seat (32) is fixedly disposed on the inner ring of the driven bearing (313).

6. The tee pipe welding fixture according to claim 5, characterized in that, The adapter plate (311) is connected to a slider (33), and the bracket (10) is fixedly connected to a guide rail (34) extending in the vertical direction. The slider (33) and the guide rail (34) are slidably engaged.

7. The tee pipe welding fixture according to claim 5, characterized in that, The clamping mechanism (30) further includes a locking assembly (35), which includes a connecting block (351) and a handle (352). The connecting block (351) is rotatably connected to the connecting seat (31), and the handle (352) is fixedly connected to the connecting block (351). The bracket (10) has a limiting plate (16) on one side near the pressing seat (32). The limiting plate (16) has a sliding groove (161) extending along the vertical direction and a plurality of limiting grooves (162) perpendicular to and communicating with the sliding groove (161). The plurality of limiting grooves (162) are arranged at intervals along the vertical direction. The handle (352) can slide along the sliding groove (161) or be stuck in the limiting groove (162).

8. The tee pipe welding fixture according to any one of claims 1-4, characterized in that, The clamping seat (21) includes a support seat (211), a quick clamp (212), and at least one baffle (213). The support seat (211) is rotatably mounted on the bracket (10) and is used to support the three-way base (101). The quick clamp (212) and at least one baffle (213) are spaced apart on the periphery of the support seat (211) and cooperate to clamp the three-way base (101).

9. The tee pipe welding fixture according to any one of claims 1-4, characterized in that, The bracket (10) includes a base plate (11), a lower support rod (12), a receiving plate (13), an upper support rod (14), and an upper frame (15). The receiving plate (13) is located above the base plate (11). The lower support rod (12) is connected between the base plate (11) and the receiving plate (13). The clamping seat (21) is rotatably disposed on the receiving plate (13). The upper support rod (14) is erected on the upper side of the receiving plate (13). The upper frame (15) is connected to the top of the upper support rod (14). The connecting seat (31) is slidably disposed on the upper frame (15) in the vertical direction.

10. A laser welding equipment, characterized in that, The device includes a laser welding apparatus and a tee welding fixture as described in any one of claims 1-9, wherein the laser welding apparatus is used to weld and fix the tee base (101) and the pipe fitting (102) clamped on the tee welding fixture.

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