Vehicle exhaust tail pipe welding device
The modularly designed vehicle exhaust tailpipe welding device solves the quality problems and high production costs caused by positional deviations during exhaust tailpipe welding, achieving an efficient and low-cost welding solution.
Patent Information
- Application Number
- CN202520319999.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In the existing technology, the welding quality of exhaust tailpipes is poor due to the relative positional deviation between the pipes, which easily leads to air leakage. In addition, different specifications of tailpipes require different tooling, which increases production costs and difficulty.
A modular vehicle exhaust tailpipe welding device was designed, including a positioning part, a clamping part, and a protective plate fixing part. The positioning part fixes the flange, the clamping part fixes the pipe fittings and connecting pipes, and the protective plate fixing part fixes the protective plate, realizing flexible positioning and fixing to adapt to welding requirements of different specifications.
It improves welding quality, reduces production costs, ensures welding reliability and consistency, and adapts to the welding needs of exhaust tailpipes of different specifications.
Smart Images
Figure CN223889226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle exhaust system technology, and in particular to a vehicle exhaust tailpipe welding device. Background Technology
[0002] The exhaust tailpipe is an important component of a vehicle's exhaust system, used to discharge vehicle exhaust gases. During the production of the exhaust tailpipe, multiple pipe sections are usually connected together by welding. If there is a deviation in the relative position between the pipe sections, it will lead to poor reliability of the tailpipe and may even cause air leakage, increasing the number of repairs and affecting the user experience. Moreover, due to the curved shape of the exhaust tailpipe, it is relatively inconvenient to fix. If different specifications of tailpipes are to be welded and processed, different tooling is required, which increases production costs. Utility Model Content
[0003] The purpose of this utility model is to provide a vehicle exhaust tailpipe welding device. Through modular design, it is flexible in adjustment, has a simple overall structure, reduces production costs, and helps to ensure the welding quality of the exhaust tailpipe.
[0004] This utility model provides a welding device for a vehicle exhaust tailpipe. The exhaust tailpipe includes a main pipe welded from several pipe fittings, and a connecting pipe and a protective plate welded to the outer wall of the main pipe, comprising:
[0005] The positioning part is used to fix the flange at the end of the exhaust tailpipe.
[0006] The clamping part includes a base support and a top pressing member. The base support has a limiting groove for accommodating the pipe fitting or the connecting pipe. The top pressing member is movably mounted on the upper end of the base support for fixing the pipe fitting and / or fixing the connecting pipe.
[0007] The guard plate fixing part is used to fix the guard plate.
[0008] The positioning part can fix the flange, thereby fixing the end of the main pipe to prevent the end of the main pipe from shaking during welding and affecting the welding quality between the pipe fittings. The clamping part is used to fix the pipe fittings and / or the connecting pipe to be welded. The clamping part can achieve different fixing functions. It only needs to be opened by matching the limiting groove with the pipe fitting or connecting pipe to facilitate the welding connection between pipe fittings and / or welding the connecting pipe to the main pipe. The modular design of the clamping part saves production costs. The guard plate fixing part can fix the guard plate to be welded to facilitate the welding of the guard plate to the main pipe. The overall structure is simple, can ensure the welding quality of the exhaust tailpipe, can be adjusted according to the specifications of the exhaust tailpipe, which helps to reduce production costs and has good applicability.
[0009] In one embodiment, the positioning part includes a backing plate and at least two clamping arms. The backing plate is configured to be parallel to and in contact with the end face of the flange. The at least two clamping arms cooperate with the backing plate to form a clamping space for accommodating and fixing the flange. The at least two clamping arms are configured to be movable relative to the backing plate to change the size of the clamping space.
[0010] In one embodiment, the abutment and at least two of the clamping arms are configured to move synchronously along the axial direction of the flange bore.
[0011] In one embodiment, the positioning part further includes a support base, the abutment is movably mounted on the support base, the support base includes a guide rod, the abutment has a guide hole and passes through the guide hole onto the guide rod, at least two clamping arms are movably mounted on the abutment, and the abutment can move along the guide rod.
[0012] In one embodiment, the clamping part further includes a support, on which a reversing member is mounted, and the bottom support member is mounted on the reversing member. The reversing member is used to change the angle of the bottom support member and the top pressing member relative to the support.
[0013] In one embodiment, at least one adjusting member is detachably mounted on the base support, the adjusting member being configured to contact the outer wall of the tube received within the limiting groove.
[0014] In one embodiment, the protective plate fixing part includes an adhesive member, one end of which is used to contact the protective plate. The adhesive member is configured to be movable relative to the pipe to fix the protective plate to the outer wall of the pipe.
[0015] In one embodiment, the guard plate fixing part further includes a guide seat and a movable seat. The fitting member is installed on the movable seat. The upper end of the guide seat is provided with a guide strip, and the lower end of the movable seat is provided with a slider. The slider is slidably engaged with the guide strip.
[0016] In one embodiment, a reversing member is mounted on the movable seat, and the fitting member is mounted on the reversing member. The reversing member is used to change the angle of the fitting member relative to the movable seat.
[0017] In one embodiment, the reversing member includes a first connector and a second connector, wherein the first connector is fixedly connected to or rotatably connected to the second connector. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0020] Figure 2 This is a schematic diagram of the positioning part according to an embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the clamping part according to an embodiment of the present invention;
[0022] Figure 4 This is another structural schematic diagram of the clamping part according to an embodiment of the present invention;
[0023] Figure 5 This is a schematic diagram of the structure of the clamping part and the connecting pipe in one embodiment of the present invention;
[0024] Figure 6 This is a schematic diagram of the structure of the guard plate fixing part according to an embodiment of the present utility model.
[0025] In the picture:
[0026] 10-Positioning part; 11-Support plate; 12-Clamping arm; 121-Drive cylinder; 13-Support base; 131-Guide rod; 14-Clamping piece; 141-First clamping seat; 142-Second clamping seat; 143-Rotating shaft;
[0027] 20-Clamping part; 21-Support; 211-Reversing component; 212-First connecting component; 213-Second connecting component; 22-Bottom support; 221-Limiting groove; 222-Adjusting component; 23-Top pressing component; 231-Pressure groove; 24-Extension frame; 241-Quick clamp;
[0028] 30-Guard plate fixing part; 31-Fitting part; 32-Guide seat; 321-Guide strip; 322-Push-pull clamp; 33-Modible seat; 331-Slider;
[0029] 40 - Base; 41 - Hanging ring;
[0030] 50 - Pipe fitting; 51 - Flange; 52 - Connecting pipe; 53 - Protective plate. Detailed Implementation
[0031] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0032] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.
[0033] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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.
[0034] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0035] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0036] Combination Figure 1 and Figure 2 The exhaust tailpipe welding device proposed in this utility model is used to assist in the welding of exhaust tailpipes. The exhaust tailpipe includes a main pipe and a flange 51. The main pipe is welded together from several pipe fittings 50. At least one end of the main pipe is connected to the flange 51. The flange 51 is used to connect the main pipe to a muffler or other pipes to realize the installation of the main pipe. The outer wall of the main pipe (pipe fitting 50) is welded with a connecting pipe 52 and a protective plate 53. The connecting pipe 52 can connect other pipes to the main pipe. The protective plate 53 can strengthen the connection strength of the pipe fittings 50. In particular, the protective plate 53 is set at the connection of some pipe fittings 50 with large bending angles to ensure the quality of the main pipe and help avoid air leakage problems.
[0037] Combination Figure 1 , Figure 2 and Figure 3The vehicle exhaust tailpipe welding device proposed in this utility model includes:
[0038] Positioning part 10, used to fix flange 51 at the end of exhaust tailpipe.
[0039] The clamping part 20 includes a base support 22 and a top pressing member 23. The base support 22 has a limiting groove 221 for accommodating the pipe fitting 50 or the connecting pipe 52. The top pressing member 23 is movably mounted on the upper end of the base support 22 for fixing the pipe fitting 50 and / or for fixing the connecting pipe 52.
[0040] The guard plate fixing part 30 is used to fix the guard plate 53.
[0041] The positioning part 10 can fix the flange 51, thereby fixing the end of the main pipe to play a positioning role and prevent the end of the main pipe from shaking during the welding process, which would affect the welding quality between the pipe fittings 50. The clamping part 20 is used to fix the pipe fittings 50 and / or to fix the pipe 52 to be welded. The clamping part 20 can achieve different fixing functions. It only needs to be opened by matching the limiting groove 221 with the pipe fittings 50 or the pipe 52 to facilitate the welding connection between the pipe fittings 50 and / or the welding of the pipe 52 to the main pipe. The modular design of the clamping part 20 saves production costs. The guard plate fixing part 30 can fix the guard plate 53 to be welded, so as to weld the guard plate 53 to the main pipe. The overall structure is simple, can ensure the welding quality of the exhaust tailpipe, can be adjusted according to the specifications of the exhaust tailpipe, which helps to reduce production costs and has good applicability.
[0042] In one embodiment, such as Figure 2 As shown, the positioning part 10 includes a back plate 11 and at least two clamping arms 12. The back plate 11 is configured to be parallel to and in contact with the end face of the flange 51. The at least two clamping arms 12 are configured to have a fixing surface that is parallel to and can contact the end face of the flange 51. The at least two clamping arms 12 cooperate with the back plate 11 to form a clamping space for accommodating and fixing the flange 51. The at least two clamping arms 12 are configured to be movable relative to the back plate 11 to change the size of the clamping space and to clamp the flange 51 between the clamping arms 12 and the back plate 11 for fixing or to release the flange 51.
[0043] In this example of Embodiment 1, as Figure 2 As shown, a drive cylinder 121 is installed on the side of the back plate 11 away from the flange 51. The output shaft of the drive cylinder 121 is connected to at least two clamping arms 12 to drive at least two clamping arms 12 to move synchronously relative to the back plate 11.
[0044] In this first embodiment, the abutment 11 and at least two clamping arms 12 are configured to move synchronously along the axial direction of the flange hole of the flange 51 to adjust the position of the clamping space according to the specifications of the main pipe and the flange 51, thereby enabling the flange 51 to be fixed in the clamping space.
[0045] In one possible solution, such as Figure 2 As shown, the positioning part 10 also includes a support base 13, and the abutment 11 is movably mounted on the support base 13. The support base 13 includes a guide rod 131. The abutment 11 has a guide hole that cooperates with the guide rod 131 and passes through the guide hole onto the guide rod 131. At least two clamping arms 12 are movably mounted on the abutment 11, and the abutment 11 can move along the guide rod 131.
[0046] Optionally, the number of guide rods 131 is set to two, and the two guide rods 131 are parallel in the width direction of the abutment 11 to ensure that the adjustment of the abutment 11 is stable and efficient.
[0047] Optionally, such as Figure 2 As shown, one of the abutment plate 11 and the support base 13 is provided with a locking piece 14, and the other is provided with a locking groove. When the abutment plate 11 is adjusted to a suitable position by the cooperation of the guide rod 131 and the guide hole, the locking piece 14 is locked in the locking groove, and the abutment plate 11 is fixed relative to the support base 13.
[0048] Furthermore, the end of the clip 14 has a protruding hook near the slot, which can be engaged in the slot to fix the abutment 11 to the support base 13.
[0049] Optionally, such as Figure 2 As shown, a first card holder 141 is detachably installed on one side of the abutment 11. The first card holder 141 has a first receiving groove (not shown in the figure). A second card holder 142 is detachably installed on one side of the support base 13. The second card holder 142 has a second receiving groove (not shown in the figure). The first card holder 141 and the second card holder 142 cooperate. One end of the card 14 is rotatably installed in one of the first receiving groove and the second receiving groove through the rotating shaft 143, and the other end can be engaged in the other one of the first receiving groove and the second receiving groove.
[0050] In one embodiment, combined with Figure 3 and Figure 4 The clamping part 20 also includes a support 21, on which a reversing member 211 is installed. The bottom support member 22 is installed on the reversing member 211. The reversing member 211 is used to change the angle of the bottom support member 22 and the top pressure member 23 relative to the support 21, so that the bottom support member 22 and the top pressure member 23 can match the bending direction of the main pipe (pipe fitting 50) to adapt to pipe fittings 50 with different shapes and bending angles, and has high flexibility.
[0051] In this example of Embodiment 1, as Figure 4 As shown, the reversing component 211 includes a first connecting member 212 and a second connecting member 213. The first connecting member 212 is connected to the support 21, and the second connecting member 213 is connected to the base support 22. The first connecting member 212 and the second connecting member 213 are fixedly connected or rotatably connected.
[0052] When the first connector 212 and the second connector 213 are fixedly connected, the first connector 212 is detachably connected to the support 21, and the second connector 213 is fixedly or detachably connected to the base support 22. The first connector 212 and the second connector 213 are configured to be non-parallel, that is, they are at a certain angle (but not 180°) to change the angle of the base support 22 and the top pressure member 23 relative to the support 21 by changing different reversing members 211. When it is necessary to make the angle between the first connector 212 and the second connector 213 180°, the reversing member 211 can be omitted, and the base support 22 can be directly installed on the support 21 to save investment costs.
[0053] When the first connector 212 and the second connector 213 are rotatably connected, the angle of the second connector 213 relative to the first connector 212 is adjustable, thereby changing the angle of the bottom support 22 and the top pressure member 23 relative to the support 21. At this time, the first connector 212 can be fixedly connected to the support 21 or detachably connected, and the second connector 213 can be fixedly connected to the bottom support 22 or detachably connected.
[0054] In this first embodiment, the limiting groove 221 is an arc-shaped groove to fit the outer periphery of the pipe fitting 50, which can provide good positioning for the pipe fitting 50 and can work with the pressing member 23 to fix the pipe fitting 50. In another example, the limiting groove 221 is a square groove or a groove of other shapes.
[0055] Optionally, such as Figure 3 As shown, at least one adjusting member 222 is detachably installed on the base support 22. The orthographic projection of the adjusting member 222 in the through direction of the limiting groove 221 is accommodated within the orthographic projection of the limiting groove 221 in its through direction. The adjusting member 222 is configured to contact the outer wall of the pipe fitting 50 accommodated in the limiting groove 221. When the size of the limiting groove 221 is larger than that of the pipe fitting 50, the limiting groove 221 and the adjusting member 222 can be installed to cooperate and jointly position and limit the pipe fitting 50, so that the clamping part 20 can be used to fix pipe fittings 50 of different specifications.
[0056] Furthermore, the adjusting component 222 is detachably installed on the base support 22 by screw connection. The adjusting component 222 can be made of copper block, rubber block, etc. Preferably, the number of adjusting components 222 is set to three, and the three adjusting components 222 are distributed in a triangle to provide a good fixing effect on the pipe fitting 50.
[0057] In this example of Embodiment 1, as Figure 3 As shown, an extension frame 24 is provided on one side of the base support 22. A quick clamp 241 is installed on the extension frame 24. The top pressing member 23 is installed on the extension frame 24 via the quick clamp 241. The quick clamp 241 enables the top pressing member 23 to move relative to the limiting groove 221. When the top pressing member 23 approaches the limiting groove 221, the top pressing member 23 contacts the pipe 50 or the connecting pipe 52 to press the pipe 50 into the limiting groove 221. When the top pressing member 23 moves away from the limiting groove 221, the pipe 50 or the connecting pipe 52 can be removed from the limiting groove 221.
[0058] Optionally, the extension bracket 24 can be detachably mounted on the base support 22 by screwing, so as to replace different top pressure members 23 according to the specifications of the pipe fitting 50.
[0059] Optionally, such as Figure 3 As shown, the top pressing member 23 has a pressing groove 231 at one end near the limiting groove 221. The pressing groove 231 cooperates with the pipe fitting 50 or the connecting pipe 52 to increase the contact area during fixing, thereby improving the fixing effect.
[0060] Reference Figure 1 and Figure 4 When the clamping part 20 is used to fix the pipe fitting 50, the opening direction of the limiting groove 221 and the pressing groove 231 is the same as the extension direction of the pipe fitting 50, as shown in the reference. Figure 5 When the clamping part 20 is used to fix the pipe 52, the opening direction of the limiting groove 221 and the pressing groove 231 is the same as the extension direction of the pipe 52.
[0061] In one embodiment, such as Figure 6 As shown, the guard plate fixing part 30 includes a fitting member 31, one end of which is used to contact the guard plate 53. The fitting member 31 is configured to move relative to the pipe 50 to fix the guard plate 53 to the outer wall of the pipe 50.
[0062] Optionally, the fitting 31 has a fixing groove at one end near the tube 50, and the fixing groove matches the outer periphery of the tube 50 to press the protective plate 53 onto the outer wall of the tube 50.
[0063] In this example of Embodiment 1, as Figure 6As shown, the guard plate fixing part 30 also includes a guide seat 32 and a movable seat 33. The fitting part 31 is installed on the movable seat 33. The upper end of the guide seat 32 is provided with a guide strip 321, and the lower end of the movable seat 33 is provided with a slider 331. The slider 331 and the guide strip 321 are slidably engaged.
[0064] Optionally, such as Figure 6 As shown, a reversing component 211 is installed on the movable seat 33, and a fitting component 31 is installed on the reversing component 211. The reversing component 211 is used to change the angle of the fitting component 31 relative to the movable seat 33 so that the fitting component 31 can cooperate with the bending direction of the main pipe (pipe fitting 50) to press the corresponding guard plate 53 onto the outer wall of the pipe fitting 50. It can fix the guard plate 53 of the main pipe with different shapes and bending angles with high flexibility.
[0065] Furthermore, the reversing component 211 includes a first connector 212 and a second connector 213. The first connector 212 is connected to the movable seat 33, and the second connector 213 is connected to the fitting component 31. The first connector 212 and the second connector 213 are either fixedly connected or rotatably connected.
[0066] When the first connector 212 and the second connector 213 are fixedly connected, the first connector 212 is detachably connected to the movable seat 33, and the second connector 213 is fixedly or detachably connected to the fitting part 31. The first connector 212 and the second connector 213 are configured to be non-parallel, that is, they are at a certain angle (but not 180°) to facilitate the replacement of different reversing parts 211. When it is necessary to make the angle between the first connector 212 and the second connector 213 180°, the reversing part 211 can be omitted, and the fitting part 31 can be directly installed on the movable seat 33 to save investment costs.
[0067] When the first connector 212 and the second connector 213 are rotatably connected, the angle of the second connector 213 relative to the first connector 212 can be adjusted, thereby changing the angle of the mating member 31 relative to the movable seat 33. At this time, the first connector 212 can be fixedly connected to the movable seat 33 or detachably connected, and the second connector 213 can be fixedly connected to the mating member 31 or detachably connected.
[0068] In this example of Embodiment 1, as Figure 6 As shown, a push-pull clamp 322 is installed on the guide seat 32. The push rod of the push-pull clamp 322 is connected to the movable seat 33. By operating the push-pull clamp 322, the movable seat 33 can be moved relative to the guide seat 32. When the movable seat 33 moves to the required position, the push-pull clamp 322 can fix the movable seat 33 on the guide seat 32 to avoid the welding quality of the protective plate 53 being affected by the shaking of the movable seat 33 during the welding process.
[0069] In one embodiment, such as Figure 1 As shown, the vehicle exhaust tailpipe welding device proposed in this utility model also includes a base 40. The aforementioned positioning part 10, clamping part 20 and guard plate fixing part 30 are integrated and installed on the base 40, and the number of installations, their positions on the base 40, angles, etc. can be adjusted according to the specifications of the exhaust tailpipe.
[0070] Optionally, at least one positioning part 10 is detachably mounted on the base 40, and more specifically, the support base 13 is detachably mounted on the base 40 by means of screws.
[0071] Optionally, at least one clamping part 20 is detachably mounted on the base 40, and more specifically, the support 21 is detachably mounted on the base 40 by means of screws.
[0072] Optionally, at least one guard plate fixing part 30 is detachably mounted on the base 40, and more specifically, the guide seat 32 is detachably mounted on the base 40 by means of screw connection.
[0073] Optionally, such as Figure 1 As shown, a lifting ring 41 is provided on the base 40 to facilitate the handling of the vehicle exhaust tailpipe welding device of this utility model, which improves convenience.
[0074] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A welding device for a vehicle exhaust tailpipe, the exhaust tailpipe comprising a main pipe welded from a plurality of pipe fittings (50), and a connecting pipe (52) and a protective plate (53) welded to the outer wall of the main pipe, characterized in that, include: Positioning part (10) is used to fix the flange (51) at the end of the exhaust tailpipe. The clamping part (20) includes a bottom support (22) and a top pressing member (23). The bottom support (22) has a limiting groove (221) for accommodating the pipe fitting (50) or the connecting pipe (52). The top pressing member (23) is movably mounted on the upper end of the bottom support (22) for fixing the pipe fitting (50) and / or for fixing the connecting pipe (52). The guard plate fixing part (30) is used to fix the guard plate (53).
2. The vehicle exhaust tailpipe welding device according to claim 1, characterized in that, The positioning part (10) includes a backing plate (11) and at least two clamping arms (12). The backing plate (11) is configured to be parallel to and in contact with the end face of the flange (51). The at least two clamping arms (12) cooperate with the backing plate (11) to form a clamping space for accommodating and fixing the flange (51). The at least two clamping arms (12) are configured to be movable relative to the backing plate (11) to change the size of the clamping space.
3. The vehicle exhaust tailpipe welding device according to claim 2, characterized in that, The abutment (11) and at least two of the clamping arms (12) are configured to move synchronously along the axial direction of the flange hole of the flange (51).
4. The vehicle exhaust tailpipe welding device according to claim 3, characterized in that, The positioning part (10) also includes a support base (13), the abutment (11) is movably mounted on the support base (13), the support base (13) includes a guide rod (131), the abutment (11) has a guide hole and passes through the guide hole onto the guide rod (131), at least two clamping arms (12) are movably mounted on the abutment (11), and the abutment (11) can move along the guide rod (131).
5. The vehicle exhaust tailpipe welding device according to claim 1, characterized in that, The clamping part (20) also includes a support (21), on which a reversing member (211) is installed. The bottom support (22) is installed on the reversing member (211), and the reversing member (211) is used to change the angle of the bottom support (22) and the top pressing member (23) relative to the support (21).
6. The vehicle exhaust tailpipe welding device according to claim 1, characterized in that, At least one adjusting member (222) is detachably mounted on the base support (22), the adjusting member (222) being configured to contact the outer wall of the tube (50) housed in the limiting groove (221).
7. The vehicle exhaust tailpipe welding device according to claim 1, characterized in that, The guard plate fixing part (30) includes a fitting (31), one end of which is used to contact the guard plate (53). The fitting (31) is configured to move relative to the pipe (50) to fix the guard plate (53) to the outer wall of the pipe (50).
8. The vehicle exhaust tailpipe welding device according to claim 7, characterized in that, The guard plate fixing part (30) also includes a guide seat (32) and a movable seat (33). The fitting part (31) is installed on the movable seat (33). The upper end of the guide seat (32) is provided with a guide strip (321), and the lower end of the movable seat (33) is provided with a slider (331). The slider (331) is slidably engaged with the guide strip (321).
9. The vehicle exhaust tailpipe welding device according to claim 8, characterized in that, A reversing element (211) is installed on the movable seat (33), and the fitting element (31) is installed on the reversing element (211). The reversing element (211) is used to change the angle of the fitting element (31) relative to the movable seat (33).
10. The vehicle exhaust tailpipe welding apparatus according to claim 5 or 9, characterized in that, The reversing component (211) includes a first connector (212) and a second connector (213), wherein the first connector (212) and the second connector (213) are fixedly connected or rotatably connected.