Automobile exhaust pipe welding fixture

Abstract

The utility model discloses a kind of automobile exhaust pipe welding jigs, belong to positioning fixture technical field, including support plate, first fixed component is set on support plate upper portion, the both ends of first fixed component are set second fixed component, and welding torch assembly is set in the side of first fixed component;First fixed component includes first drive motor, the output of first drive motor is connected with rotating shaft, driving gear is set on rotating shaft, one end of driving gear is set gear ring, gear ring is engaged with driving gear, and gear ring is set on first rotating member and is fixedly connected with first rotating member;The both ends of first rotating member are set first lug, and first lug is connected with the first recess of first shell inner side;Second fixed component includes second drive motor, and the output of second drive motor is connected with first screw rod.Welding of automobile exhaust pipe muffler and exhaust pipe body can be realized, and welding efficiency is guaranteed, and it is suitable for welding of exhaust pipe muffler and exhaust pipe body of different vehicle models simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of positioning fixture technology, specifically relating to a welding fixture for automotive exhaust pipes. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] As a core component of the automotive exhaust system, the exhaust pipe is mainly assembled from key components such as the exhaust manifold, exhaust pipe, and muffler, and is widely used in various vehicle types, including light vehicles, microcars, and buses. Its core function is to connect the engine exhaust manifold to the muffler. Through a flexible connection design, it achieves vibration and noise reduction, simplifies the installation process, and extends the service life of the entire exhaust muffler system, significantly impacting the vehicle's power performance and driving comfort.

[0004] In the manufacturing process of automotive exhaust pipes, the welding of the muffler to the pipes at both ends is a crucial step, as the welding quality directly determines the exhaust pipe's sealing performance and structural stability. However, current mainstream exhaust pipe welding devices in the industry generally suffer from the following problems: First, the welding efficiency is low. Most existing devices adopt a single-sided welding design, which can only perform welding operations on one end of the muffler's inlet and outlet and the pipeline. When completing the welding process of the entire exhaust pipe, one end must be welded first. After that end is welded, the workpiece position is adjusted before welding the other end. The interval between the two welding operations not only increases the time consumption, but also may cause workpiece positioning deviation due to multiple clamping, which further affects the welding accuracy and production cycle, making it difficult to adapt to the efficiency requirements of large-scale mass production scenarios.

[0005] Secondly, the equipment has poor applicability. The length of exhaust pipe mufflers varies significantly between different car models and engine displacements. However, the welding mechanisms in existing welding equipment are mostly fixed in design, making it impossible to flexibly adjust the spacing of the welding guns according to the actual length of the muffler. If different specifications of exhaust pipes need to be processed, it is often necessary to replace them with special fixtures or adjust the entire structure of the equipment. This not only increases the cost of equipment modification and operational complexity but also prolongs production changeover time, making it difficult to meet production demands and negatively impacting the company's cost control. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides an automotive exhaust pipe welding fixture, which can realize the welding of automotive exhaust pipe mufflers and exhaust pipe bodies while ensuring welding efficiency. It is also applicable to the welding of exhaust pipe mufflers and exhaust pipe bodies for different vehicle models.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A welding fixture for automotive exhaust pipes includes a support plate, a first fixing component disposed on the upper part of the support plate, second fixing components disposed at both ends of the first fixing component, and a welding gun assembly disposed on the side of the first fixing component. The first fixing component includes a first drive motor, the output end of which is connected to a rotating shaft. A drive gear is provided on the rotating shaft, and a gear ring is provided at one end of the drive gear. The gear ring meshes with the drive gear and is sleeved on a first rotating member and fixedly connected to the first rotating member. First protrusions are provided at both ends of the first rotating member, and the first protrusions are connected to a first groove on the inner side of the first housing. The second fixing component includes a second drive motor, the output end of which is connected to a first screw. A first moving block is provided on the first screw. A housing support block is provided at the upper end of the first moving block. A second housing is provided at the upper end of the housing support block. A second rotating member is provided on the inner side of the second housing. Second protrusions are provided at both ends of the second rotating member. The second protrusions are connected to a second groove on the inner side of the second housing.

[0008] As a further technical solution, the rotating shaft is fixedly connected to the drive gear, and a square plate is provided at the end of the rotating shaft. The square plate is movably connected to the end of the rotating shaft, and the lower end of the square plate is fixedly connected to the support plate. Several shell support columns are provided at intervals at the lower end of the first shell. One end of the shell support column is fixedly connected to the first shell, and the other end is fixedly connected to the support plate.

[0009] As a further technical solution, a rotating shaft is provided on the inner wall surface of the first groove of the first outer shell. The rotating shaft is fixedly connected to the inner wall surface of the first groove. A roller is provided on the rotating shaft. The roller is rotatably connected to the rotating shaft. The roller is located between the first groove and the first protrusion of the first outer shell, and the upper end of the roller is in close contact with the first protrusion.

[0010] As a further technical solution, a first hydraulic cylinder is provided at the lower end of the inner side of the first rotating member, a first mounting block is provided at the upper end of the inner side of the first rotating member, a first clamping block is provided at the output end of the first hydraulic cylinder and is fixedly connected to the first clamping block, and a first clamping block is provided at the end of the first mounting block and is fixedly connected to the first clamping block.

[0011] As a further technical solution, the upper surface of the support plate is provided with a first directional groove, the first screw is located in the first square groove, one end of the first screw passes through the first square groove and is fixedly connected to the output end of the second drive motor, and the other end is movably connected to the inner wall of the first square groove; a first partition is provided in the middle of the first screw, the first screw passes through the first partition, the first partition is fixedly connected to the first square groove, the surface of the first screw at one end of the first partition is a left-hand thread, and the surface of the first screw at the other end is a right-hand thread.

[0012] As a further technical solution, a rotating shaft is provided on the inner wall surface of the second groove of the second outer shell. The rotating shaft is fixedly connected to the inner wall surface of the second groove. A roller is provided on the rotating shaft. The roller is rotatably connected to the rotating shaft. The roller is located between the second groove and the second protrusion of the second outer shell, and the upper end of the roller is in close contact with the second protrusion.

[0013] As a further technical solution, a second hydraulic cylinder is provided at the lower end of the inner side of the second rotating member, a second mounting block is provided at the upper end of the inner side of the second rotating member, a second clamping block is provided at the output end of the second hydraulic cylinder and is fixedly connected to the second clamping block, and a second clamping block is provided at the end of the second mounting block and is fixedly connected to the second clamping block.

[0014] As a further technical solution, the welding torch assembly includes a third drive motor, the output end of which is connected to a second screw; the surface of the support plate is provided with a second square groove, the second screw is located in the second square groove, one end of the second screw passes through the second square groove and is fixedly connected to the output end of the third drive motor, and the other end is movably connected to the inner wall of the second square groove; a second partition is provided in the middle of the second screw, the second screw passes through the second partition, the second partition is fixedly connected to the second square groove, the surface of the second screw at one end of the second partition is a left-hand thread, and the surface of the second screw at the other end is a right-hand thread.

[0015] As a further technical solution, a second moving block is symmetrically arranged on the second screw, a linear motor is arranged at the upper end of the second moving block, the second moving block is fixedly connected to the linear motor, and a welding gun is installed at the output end of the linear motor.

[0016] As a further technical solution, a number of support columns are spaced apart at the lower end of the support plate, and the support columns are fixedly connected to the support plate; a motor mounting plate is provided on the side of the support plate, and a second drive motor and a third drive motor are mounted on the upper end of the motor mounting plate.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are: This invention uses a first fixing component to fix the exhaust pipe muffler and drive its rotation, and a second fixing component to fix the exhaust pipe body and drive it to move with the muffler, thereby enabling welding via a welding torch assembly. In use, the exhaust pipe muffler is placed on the first clamping block, and the first hydraulic cylinder is activated to clamp the muffler. The exhaust pipe body is then placed on the second clamping block, and the second hydraulic cylinder is activated to clamp it, ensuring the end of the exhaust pipe body is aligned with the interface of the muffler. Next, the second drive motor is activated to rotate the first screw, moving the first moving block and thus the exhaust pipe body towards the muffler. Once at the welding position, the third drive motor is activated to rotate the second screw, moving the second moving block and thus aligning the welding torch with the welding position. After alignment, the linear motor is activated, driving the welding torch towards the welding position. The welding positions are close together. After completion, the welding torch is started to weld one position. At this time, the exhaust pipe body and the exhaust pipe muffler are initially welded. Then, the first drive motor is started to drive the drive gear to rotate. The drive gear drives the gear ring to rotate. The gear ring drives the first rotating component to rotate. At this time, the first protrusions at both ends of the first rotating component rotate in the first groove of the first housing, and the rotation is assisted by rollers, thereby realizing the rotation of the exhaust pipe muffler. At the same time, the exhaust pipe body moves to make the second rotating component rotate as well. At this time, the second protrusions at both ends of the second rotating component rotate in the second groove of the second housing, and the rotation is assisted by rollers. The welding torch continues to weld until all welding is completed, thus realizing the welding of the automobile exhaust pipe muffler and exhaust pipe body. Two exhaust pipe bodies can be welded at the same time, effectively ensuring welding efficiency. The positions of the first fixing component, the second fixing component, and the welding torch component can also be adjusted according to the exhaust pipe model, thus making it suitable for welding exhaust pipe mufflers and exhaust pipe bodies of different models. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0019] Figure 1 This is a schematic diagram of the structure of the automotive exhaust pipe welding fixture of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the automotive exhaust pipe welding fixture of this utility model. Figure 2 ; Figure 3 This is a partial enlargement of the second fixing component of this utility model. Figure 1 ; Figure 4 This is a partial enlargement of the second fixing component of this utility model. Figure 2 ; Figure 5 This is a partial enlarged view of the first fixing component of this utility model; Figure 6 This is a diagram showing the installation positions of the rotating shaft and rollers in this utility model; Figure 7 This is a cross-sectional view of the automotive exhaust pipe welding fixture of this utility model; In the diagram: 1. Support plate; 2. Support column; 3. Motor mounting plate; 4. First fixed component; 401. First drive motor; 402. Rotating shaft; 403. Drive gear; 404. Square plate; 405. Housing support column; 406. First rotating component; 407. Gear ring; 408. First housing; 409. First mounting block; 410. First hydraulic cylinder; 411. First clamping block; 412. First protrusion; 413. First groove; 5. Second fixing component; 501. Second drive motor; 502. First screw; 503. First moving block; 504. Housing support block; 505. Second housing; 506. Second rotating component; 507. Second mounting block; 508. Second hydraulic cylinder; 509. Second clamping block; 510. Second groove; 511. Second protrusion; 6. First square groove; 7. Second square groove; 8. First partition; 9. Welding torch assembly; 901. Third drive motor; 902. Second screw; 903. Second moving block; 904. Second partition; 905. Linear motor; 10. Rotating shaft; 11. Roller. Detailed Implementation

[0020] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0021] In the manufacturing process of automotive exhaust pipes, the welding of the muffler to the pipes at both ends is a crucial step, as the welding quality directly determines the exhaust pipe's sealing performance and structural stability. However, current mainstream exhaust pipe welding devices in the industry generally suffer from the following problems: First, the welding efficiency is low. Most existing devices adopt a single-sided welding design, which can only perform welding operations on one end of the muffler's inlet and outlet and the pipeline. When completing the welding process of the entire exhaust pipe, one end must be welded first. After that end is welded, the workpiece position is adjusted before welding the other end. The interval between the two welding operations not only increases the time consumption, but also may cause workpiece positioning deviation due to multiple clamping, which further affects the welding accuracy and production cycle, making it difficult to adapt to the efficiency requirements of large-scale mass production scenarios.

[0022] Secondly, the equipment has poor applicability. The length of exhaust pipe mufflers varies significantly between different car models and engine displacements. However, the welding mechanisms in existing welding equipment are mostly fixed in design, making it impossible to flexibly adjust the spacing of the welding guns according to the actual length of the muffler. If different specifications of exhaust pipes need to be processed, it is often necessary to replace them with special fixtures or adjust the entire structure of the equipment. This not only increases the cost of equipment modification and operational complexity but also prolongs production changeover time, making it difficult to meet production demands and negatively impacting the company's cost control.

[0023] The present invention will be described in detail with reference to the accompanying drawings. This embodiment discloses a welding fixture for automotive exhaust pipes, such as... Figure 1 , Figure 3 , Figure 4 as well as Figure 7 As shown, it includes a support plate 1, a first fixing component 4 is provided on the upper part of the support plate 1, second fixing components 5 are provided at both ends of the first fixing component 4, and a welding gun assembly 9 is provided on the side of the first fixing component 4. The first fixed component 4 includes a first drive motor 401, the output end of which is connected to a rotating shaft 402. A drive gear 403 is provided on the rotating shaft 402. A gear ring 407 is provided at one end of the drive gear 403. The gear ring 407 meshes with the drive gear 403 and is sleeved on the first rotating member 406 and fixedly connected to the first rotating member 406. First protrusions 412 are provided at both ends of the first rotating member 406. The first protrusions 412 are connected to the first groove 413 inside the first outer shell 408. The second fixing component 5 includes a second drive motor 501. The output end of the second drive motor 501 is connected to the first screw 502. A first moving block 503 is provided on the first screw 502. A housing support block 504 is provided at the upper end of the first moving block 503. A second housing 505 is provided at the upper end of the housing support block 504. A second rotating member 506 is provided on the inner side of the second housing 505. Second protrusions 511 are provided at both ends of the second rotating member 506. The second protrusions 511 are connected to the second grooves 510 on the inner side of the second housing 505.

[0024] Specifically, the exhaust pipe muffler is fixed by the first fixing component 4 and rotates, while the exhaust pipe body is fixed by the second fixing component 5 and moves with the exhaust pipe muffler. Welding is then performed by the welding torch assembly 9. In use, the exhaust pipe muffler is placed on the first clamping block 411, and the first hydraulic cylinder 410 is activated to clamp the exhaust pipe muffler using the first clamping block 411. Then, the exhaust pipe body is placed on the second clamping block 509, and the second hydraulic cylinder 508 is activated to clamp the exhaust pipe body using the second clamping block 509. The exhaust pipe body is clamped, ensuring that the end of the exhaust pipe body is aligned with the interface position of the exhaust pipe muffler. Next, the second drive motor 501 is activated, driving the first screw 502 to rotate, causing the first moving block 503 to move, which in turn moves the exhaust pipe body closer to the exhaust pipe muffler. After moving to the welding position, the third drive motor 901 is activated, driving the second screw 902 to rotate, which in turn moves the second moving block 903, thus aligning the welding torch with the welding position. After alignment, the linear motor 905 is activated, moving the welding torch towards the welding position. Approaching the target area, the welding torch is activated to weld one position, at which point the exhaust pipe body and exhaust pipe muffler are initially welded. Then, the first drive motor 401 is activated to drive the drive gear 403 to rotate, which in turn drives the gear ring 407 to rotate. The gear ring 407 then drives the first rotating component 406 to rotate. At this time, the first protrusions 412 at both ends of the first rotating component 406 rotate within the first groove 413 of the first housing 408, and are assisted in rotation by the rollers 11, thus achieving the rotation of the exhaust pipe muffler. Simultaneously, the exhaust pipe body causes the second rotating component 506 to rotate as well. At this time, the second protrusions 511 at both ends of the second rotating component 506 rotate within the second groove 510 of the second housing 505, and are assisted in rotation by the rollers 11. The welding torch continues welding until all welding is completed, thus achieving the welding of the automotive exhaust pipe muffler and exhaust pipe body. Two exhaust pipe bodies can be welded simultaneously, effectively ensuring welding efficiency. The positions of the first fixing component 4, the second fixing component 5, and the welding torch component 9 can be adjusted according to the exhaust pipe model, making it suitable for welding exhaust pipe mufflers and exhaust pipe bodies of different vehicle models.

[0025] The rotating shaft 402 is fixedly connected to the drive gear 403. A square plate 404 is provided at the end of the rotating shaft 402. The square plate 404 is movably connected to the end of the rotating shaft 402. The lower end of the square plate 404 is fixedly connected to the support plate 1. Several shell support columns 405 are provided at intervals at the lower end of the first shell 408. One end of the shell support column 405 is fixedly connected to the first shell 408, and the other end is fixedly connected to the support plate 1.

[0026] Specifically, when assembling the first fixed component 4, the rotating shaft 402 is first fixedly connected to the drive gear 403 to ensure that the two can rotate synchronously during subsequent operation without relative displacement. Next, a square plate 404 is installed at the end of the rotating shaft 402, so that the square plate 404 and the end of the rotating shaft 402 are movably connected. This way, the rotating shaft 402 will not drive the square plate 404 to rotate together when it rotates. Then, the lower end of the square plate 404 is fixed to the support plate 1 to provide stable support for the rotating shaft 402.

[0027] Several shell support columns 405 are arranged at a certain interval at the lower end of the first shell 408. One end of each shell support column 405 is fixed to the first shell 408 and the other end is fixed to the support plate 1. The shell support columns 405 stably support the first shell 408 on the support plate 1, ensuring that the first shell 408 is stable in position and does not shake during the operation of the fixture.

[0028] like Figure 6 As shown, a rotating shaft 10 is provided on the inner wall of the first groove 413 of the first housing 408. The rotating shaft 10 is fixedly connected to the inner wall of the first groove 413. A roller 11 is provided on the rotating shaft 10. The roller 11 is rotatably connected to the rotating shaft 10. The roller 11 is located between the first groove 413 and the first protrusion 412 of the first housing 408. The upper end of the roller 11 is in close contact with the first protrusion 412.

[0029] Specifically, a rotating shaft 10 is installed on the inner wall of the first groove 413, with several rotating shafts 10 spaced apart. This ensures that the rotating shafts 10 are tightly fixed to the inner wall of the first groove 413, preventing them from loosening during subsequent use. Then, a roller 11 is fitted onto the rotating shaft 10, ensuring that the roller 11 can rotate freely with the rotating shaft 10 without any jamming. The roller 11 is positioned between the first groove 413 and the first protrusion 412 of the first housing 408, with its upper end tightly fitted against the first protrusion 412. Thus, when the first rotating component 406 drives the first protrusion 412 to rotate within the first groove 413, the roller 11 can roll accordingly, reducing friction between the first protrusion 412 and the first groove 413, making the rotation of the first rotating component 406 smoother.

[0030] like Figure 5 As shown, a first hydraulic cylinder 410 is provided at the lower end of the inner side of the first rotating member 406, a first mounting block 409 is provided at the upper end of the inner side of the first rotating member 406, a first clamping block 411 is provided at the output end of the first hydraulic cylinder 410 and is fixedly connected to the first clamping block 411, and the first clamping block 411 is provided at the end of the first mounting block 409 and is fixedly connected to the first clamping block 411.

[0031] Specifically, a first hydraulic cylinder 410 is installed at the lower end of the inner side of the first rotating member 406, ensuring that the first hydraulic cylinder 410 is firmly fixed to the first rotating member 406 and will not shift during operation. Then, a first mounting block 409 is installed at the upper end of the inner side of the first rotating member 406, similarly ensuring that the installation position of the first mounting block 409 is accurate and reliably fixed. Next, a first clamping block 411 is installed at the output end of the first hydraulic cylinder 410 and the end of the first mounting block 409, respectively, and both are fixedly connected.

[0032] When it is necessary to fix the exhaust pipe muffler, the first hydraulic cylinder 410 is activated. The output end of the first hydraulic cylinder 410 pushes the first clamping block 411 connected to it to move upward, and cooperates with the first clamping block 411 at the end of the first mounting block 409 to firmly clamp the exhaust pipe muffler from the upper and lower sides, thereby achieving a stable fixation of the exhaust pipe muffler.

[0033] A first square groove 6 is provided on the upper surface of the support plate 1. A first screw 502 is located in the first square groove 6. One end of the first screw 502 passes through the first square groove 6 and is fixedly connected to the output end of the second drive motor 501. The other end is movably connected to the inner wall of the first square groove 6. A first partition 8 is provided in the middle of the first screw 502. The first screw 502 passes through the first partition 8. The first partition 8 is fixedly connected to the first square groove 6. The surface of the first screw 502 at one end of the first partition 8 is left-hand threaded, and the surface of the first screw 502 at the other end is right-hand threaded.

[0034] Specifically, a first square groove 6 is machined on the upper surface of the support plate 1, and a first screw 502 is placed inside the first square groove 6. After one end of the first screw 502 passes through the first square groove 6, it is fixedly connected to the output end of the second drive motor 501 to ensure that the second drive motor 501 can drive the first screw 502 to rotate synchronously when it starts. The other end of the first screw 502 is installed in a movable connection to the inner wall of the first square groove 6 so that the rotation of the first screw 502 is not excessively obstructed. A first partition 8 is installed at the middle position of the first screw 502, allowing the first screw 502 to pass through the first partition 8, and the first partition 8 is fixedly connected to the first square groove 6, keeping the first partition 8 fixed within the first square groove 6.

[0035] The surface of the first screw 502 at one end of the first partition plate 8 is machined with a left-hand thread, and the surface of the first screw 502 at the other end is machined with a right-hand thread. In this way, when the second drive motor 501 drives the first screw 502 to rotate, the first moving blocks 503 located on both sides of the first partition plate 8 can move in opposite directions, which facilitates the adjustment of the position of the exhaust pipe body.

[0036] A rotating shaft 10 is provided on the inner wall of the second groove 510 of the second housing 505. The rotating shaft 10 is fixedly connected to the inner wall of the second groove 510. A roller 11 is provided on the rotating shaft 10. The roller 11 is rotatably connected to the rotating shaft 10. The roller 11 is located between the second groove 510 and the second protrusion 511 of the second housing 505. The upper end of the roller 11 is in close contact with the second protrusion 511.

[0037] Specifically, a rotating shaft 10 is installed on the inner wall of the second groove 510, with several rotating shafts 10 spaced apart; this ensures that the rotating shaft 10 is fixedly connected to the inner wall of the second groove 510, guaranteeing a stable installation. Then, rollers 11 are installed on the rotating shafts 10, ensuring that the rollers 11 can rotate flexibly with respect to the rotating shaft 10.

[0038] The roller 11 is located between the second groove 510 and the second protrusion 511 of the second housing 505, and the upper end of the roller 11 is in close contact with the second protrusion 511. When the second rotating member 506 drives the second protrusion 511 to rotate in the second groove 510, the roller 11 will roll along with the movement of the second protrusion 511, reducing the frictional resistance between the second protrusion 511 and the second groove 510, so that the second rotating member 506 can rotate smoothly and synchronously with the exhaust pipe muffler.

[0039] A second hydraulic cylinder 508 is provided at the lower end of the inner side of the second rotating member 506, and a second mounting block 507 is provided at the upper end of the inner side of the second rotating member 506. A second clamping block 509 is provided at the output end of the second hydraulic cylinder 508 and is fixedly connected to the second clamping block 509. A second clamping block 509 is provided at the end of the second mounting block 507 and is fixedly connected to the second clamping block 509.

[0040] Specifically, a second hydraulic cylinder 508 is installed at the lower end of the inner side of the second rotating component 506, ensuring that the installation position of the second hydraulic cylinder 508 is accurate and firmly fixed. Then, a second mounting block 507 is installed at the upper end of the inner side of the second rotating component 506, similarly ensuring that the second mounting block 507 is installed stably. The second clamping block 509 is installed at the output end of the second hydraulic cylinder 508 and the end of the second mounting block 507, respectively, and fixedly connected.

[0041] When it is necessary to fix the exhaust pipe body, the second hydraulic cylinder 508 is activated. The output end of the second hydraulic cylinder 508 pushes the corresponding second clamping block 509 to move, and cooperates with the second clamping block 509 at the end of the second mounting block 507 to firmly clamp the exhaust pipe body from the top and bottom, thereby achieving stable fixation of the exhaust pipe body and facilitating subsequent adjustment of the docking position between the exhaust pipe body and the exhaust pipe muffler.

[0042] like Figure 2As shown, the welding torch assembly 9 includes a third drive motor 901, the output end of which is connected to a second screw 902; the surface of the support plate 1 is provided with a second square groove 7, the second screw 902 is located in the second square groove 7, one end of the second screw 902 passes through the second square groove 7 and is fixedly connected to the output end of the third drive motor 901, and the other end is movably connected to the inner wall of the second square groove 7; a second partition 904 is provided in the middle of the second screw 902, the second screw 902 passes through the second partition 904, the second partition 904 is fixedly connected to the second square groove 7, the surface of the second screw 902 at one end of the second partition 904 is a left-hand thread, and the surface of the second screw 902 at the other end of the second partition 904 is a right-hand thread.

[0043] A second square groove 7 is machined on the surface of the support plate 1, and a second screw 902 is placed inside the second square groove 7. One end of the second screw 902 passes through the second square groove 7 and is fixedly connected to the output end of the third drive motor 901, so that the third drive motor 901 can drive the second screw 902 to rotate. The other end of the second screw 902 is installed in a movable connection to the inner wall of the second square groove 7 to ensure that the second screw 902 rotates flexibly.

[0044] A second partition 904 is installed in the middle of the second screw 902, allowing the second screw 902 to pass through the second partition 904, while the second partition 904 is fixedly connected to the second square groove 7. Furthermore, the surface of the second screw 902 at one end of the second partition 904 is machined with a left-hand thread, and the other end is machined with a right-hand thread. When the third drive motor 901 drives the second screw 902 to rotate, the second moving blocks 903 located on both sides of the second partition 904 will move in opposite directions, thereby adjusting the position of the welding torch to align it with the welding point.

[0045] The second screw 902 is symmetrically provided with a second moving block 903. A linear motor 905 is provided at the upper end of the second moving block 903. The second moving block 903 is fixedly connected to the linear motor 905. A welding gun is installed at the output end of the linear motor 905.

[0046] Specifically, a linear motor 905 is installed on the upper end of each second moving block 903, and the linear motor 905 is fixedly connected to the second moving block 903 to prevent the linear motor 905 from loosening or shifting during operation. Finally, a welding torch is installed at the output end of the linear motor 905, ensuring that the welding torch is securely installed and accurately positioned. When it is necessary to adjust the distance between the welding torch and the welding position, the linear motor 905 is started. The output end of the linear motor 905 drives the welding torch to move closer to or further away from the welding position until the welding torch reaches the appropriate welding position for welding operations.

[0047] like Figure 1As shown, a number of support columns 2 are spaced apart at the lower end of the support plate 1, and the support columns 2 are fixedly connected to the support plate 1; a motor mounting plate 3 is provided on the side of the support plate 1, and a second drive motor 501 and a third drive motor 901 are installed on the upper end of the motor mounting plate 3.

[0048] Specifically, several support columns 2 are installed at certain intervals at the lower end of the support plate 1, and each support column 2 is fixedly connected to the support plate 1. The support columns 2 support the support plate 1, maintaining a certain distance between the support plate 1 and the ground, while ensuring the stability of the support plate 1 during operation, preventing tilting or shaking. A motor mounting plate 3 is installed on the side of the support plate 1, ensuring that the motor mounting plate 3 is firmly fixed to the support plate 1.

[0049] The second drive motor 501 and the third drive motor 901 are respectively mounted on the upper end of the motor mounting plate 3 and fixedly connected to provide a stable mounting position for the second drive motor 501 and the third drive motor 901, ensuring that they can operate normally during work and provide power to the various components of the fixture.

[0050] The first drive motor 401, the second drive motor 501, the third drive motor 901, and the linear motor 905 all require an external power source to ensure that the motors can start normally and drive the corresponding components to operate. For example, the first drive motor 401 drives the drive gear 403 to rotate, and the second drive motor 501 drives the first screw 502 to rotate. The first hydraulic cylinder 410 and the second hydraulic cylinder 508 require an external hydraulic system as their power source. The pressure provided by the hydraulic system causes the output end of the hydraulic cylinder to push the clamping block to move, thereby clamping and fixing the exhaust pipe muffler and the exhaust pipe body.

[0051] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A welding fixture for automotive exhaust pipes, characterized in that, It includes a support plate, a first fixing component is provided on the upper part of the support plate, second fixing components are provided at both ends of the first fixing component, and a welding gun assembly is provided on the side of the first fixing component; The first fixing component includes a first drive motor, the output end of which is connected to a rotating shaft. A drive gear is provided on the rotating shaft, and a gear ring is provided at one end of the drive gear. The gear ring meshes with the drive gear and is sleeved on a first rotating member and fixedly connected to the first rotating member. First protrusions are provided at both ends of the first rotating member, and the first protrusions are connected to a first groove on the inner side of the first housing. The second fixing component includes a second drive motor, the output end of which is connected to a first screw. A first moving block is provided on the first screw. A housing support block is provided at the upper end of the first moving block. A second housing is provided at the upper end of the housing support block. A second rotating member is provided on the inner side of the second housing. Second protrusions are provided at both ends of the second rotating member. The second protrusions are connected to a second groove on the inner side of the second housing.

2. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, The rotating shaft is fixedly connected to the drive gear. A square plate is provided at the end of the rotating shaft. The square plate is movably connected to the end of the rotating shaft. The lower end of the square plate is fixedly connected to the support plate. Several shell support columns are provided at intervals at the lower end of the first shell. One end of each shell support column is fixedly connected to the first shell, and the other end is fixedly connected to the support plate.

3. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, A rotating shaft is provided on the inner wall of the first groove of the first outer shell. The rotating shaft is fixedly connected to the inner wall of the first groove. A roller is provided on the rotating shaft. The roller is rotatably connected to the rotating shaft. The roller is located between the first groove and the first protrusion of the first outer shell. The upper end of the roller is in close contact with the first protrusion.

4. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, A first hydraulic cylinder is provided at the lower end of the inner side of the first rotating component, a first mounting block is provided at the upper end of the inner side of the first rotating component, a first clamping block is provided at the output end of the first hydraulic cylinder and is fixedly connected to the first clamping block, and a first clamping block is provided at the end of the first mounting block and is fixedly connected to the first clamping block.

5. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, The upper surface of the support plate is provided with a first directional groove, the first screw is located in the first square groove, one end of the first screw passes through the first square groove and is fixedly connected to the output end of the second drive motor, and the other end is movably connected to the inner wall of the first square groove; a first partition is provided in the middle of the first screw, the first screw passes through the first partition, the first partition is fixedly connected to the first square groove, the surface of the first screw at one end of the first partition is a left-hand thread, and the surface of the first screw at the other end is a right-hand thread.

6. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, A rotating shaft is provided on the inner wall of the second groove of the second outer shell. The rotating shaft is fixedly connected to the inner wall of the second groove. A roller is provided on the rotating shaft. The roller is rotatably connected to the rotating shaft. The roller is located between the second groove and the second protrusion of the second outer shell. The upper end of the roller is in close contact with the second protrusion.

7. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, A second hydraulic cylinder is provided at the lower end of the inner side of the second rotating member, a second mounting block is provided at the upper end of the inner side of the second rotating member, a second clamping block is provided at the output end of the second hydraulic cylinder and is fixedly connected to the second clamping block, and a second clamping block is provided at the end of the second mounting block and is fixedly connected to the second clamping block.

8. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, The welding torch assembly includes a third drive motor, the output end of which is connected to a second screw. A second square groove is provided on the surface of the support plate, and the second screw is located within this groove. One end of the second screw passes through the groove and is fixedly connected to the output end of the third drive motor, while the other end is movably connected to the inner wall of the groove. A second partition is provided in the middle of the second screw, through which the second screw passes. The partition is fixedly connected to the second square groove. The surface of the second screw at one end of the partition has a left-hand thread, and the surface of the second screw at the other end has a right-hand thread.

9. A welding fixture for automotive exhaust pipes as described in claim 8, characterized in that, A second moving block is symmetrically arranged on the second screw, and a linear motor is arranged on the upper end of the second moving block. The second moving block is fixedly connected to the linear motor, and a welding gun is installed at the output end of the linear motor.

10. The automotive exhaust pipe welding fixture as described in claim 1, characterized in that, The lower end of the support plate is provided with a number of support columns spaced apart, and the support columns are fixedly connected to the support plate; a motor mounting plate is provided on the side of the support plate, and a second drive motor and a third drive motor are mounted on the upper end of the motor mounting plate.

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