A fixing device for welding of an automobile exhaust pipe

By designing a fixing device that includes an arc-shaped T-shaped placement groove and a multi-elbow clamp structure, the problems of unstable fixing and inconvenient operation in traditional exhaust pipe welding methods are solved, realizing high-precision and convenient exhaust pipe welding, adapting to different shapes and sizes, and with a compact structure.

CN224333830UActive Publication Date: 2026-06-09DALIAN WINSTAR AUTOPARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DALIAN WINSTAR AUTOPARTS CO LTD
Filing Date
2025-07-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional exhaust pipe welding methods lack stability, are difficult to adapt to different sizes and shapes, affect welding accuracy and efficiency, and are inconvenient to operate and take up a lot of space.

Method used

A fixing device is designed, comprising a base plate, a T-shaped fixing seat, a fixing plate, a support platform, horizontal and vertical elbow clamps, and a movable clamping plate. Utilizing components such as an arc-shaped T-shaped placement groove, a helical spring, and a guide shaft, it provides stability and flexibility, ensuring the fixation and position adjustment of the exhaust pipe during the welding process.

Benefits of technology

It improves welding precision and stability, enhances ease of operation, adapts to exhaust pipes of different sizes and shapes, saves space, and facilitates maintenance.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224333830U_ABST
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Abstract

The utility model relates to welding frock technical field discloses a kind of fixing device for automobile exhaust pipe welding, including bottom plate, T type fixed seat is equipped on the bottom plate, T type placing groove is equipped on the T type fixed seat, and the inside chamfer of T type placing groove is arc shape;One side of the T type placing groove is equipped with fixed plate, and stopper is equipped on the fixed plate, the other side of the T type placing groove is equipped with support table, and the fixed plate can be connected with the bottom plate fixedly;Support table is equipped with transverse elbow clamp on, and the telescopic end of transverse elbow clamp is equipped with moving clamping plate, the inside chamfer of T type placing groove is arc shape, can better fixed exhaust pipe, reduce the movement in welding process, to improve welding accuracy.Fixed plate and support table are connected with the bottom plate fixedly, increase the stability of device, ensure the stability of exhaust pipe position in welding process.
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Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically to a fixing device for welding automobile exhaust pipes. Background Technology

[0002] In automobile manufacturing, exhaust pipe welding is a crucial process. To ensure weld quality, the exhaust pipe needs to be secured in the correct position. Traditional exhaust pipe welding methods typically use simple clamps or brackets to hold the exhaust pipe in place, but these methods have several drawbacks. For example, because exhaust pipes can vary in shape and size, simple clamps may not provide sufficient stability, causing the exhaust pipe to shift during welding and affecting welding accuracy. Furthermore, operators may need to spend considerable time and effort adjusting the exhaust pipe's position, reducing work efficiency. Additionally, traditional fixing devices may lack flexibility, struggle to accommodate exhaust pipes of different sizes and shapes, and are inconvenient to maintain in daily use, while also occupying a significant amount of space. Utility Model Content

[0003] The purpose of this utility model is to provide a fixing device for welding automobile exhaust pipes, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for welding automotive exhaust pipes, comprising a base plate, a T-shaped fixing seat on the base plate, a T-shaped placement groove on the T-shaped fixing seat, and all chamfers inside the T-shaped placement groove being arc-shaped; a fixing plate on one side of the T-shaped placement groove, a stop block on the fixing plate, and a support platform on the other side of the T-shaped placement groove, both the support platform and the fixing plate being fixedly connected to the base plate; a transverse elbow clamp on the support platform, and a movable clamping plate at the telescopic end of the transverse elbow clamp.

[0005] Preferably, the base plate is provided with a vertical elbow clamp, and the telescopic end of the vertical elbow clamp is provided with a pressing clamp plate, which is located above the T-shaped placement slot.

[0006] Preferably, a raised platform is provided between the vertical elbow clamp and the base plate.

[0007] Preferably, the telescopic end of the lateral elbow clamp is fitted with a connecting plate, the extension direction of the connecting plate is parallel to that of the movable clamp, the base plate is provided with an auxiliary slide rail, and the connecting plate is slidably mounted on the auxiliary slide rail by a slider.

[0008] Preferably, the telescopic end of the lateral elbow clamp is connected to the movable clamping plate via a connecting plate, and a helical spring is provided between the connecting plate and the movable clamping plate.

[0009] Preferably, the helical spring is internally fitted with a guide shaft, which extends through the connecting plate and the movable clamping plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. Improved welding precision: The internal chamfers of the T-shaped placement groove are all arc-shaped, which can better fix the exhaust pipe and reduce movement during the welding process, thereby improving welding precision.

[0012] 2. Enhanced stability: The fixed plate and support platform are fixedly connected to the base plate, which increases the stability of the device and ensures the stability of the exhaust pipe position during the welding process.

[0013] 3. Easy to operate: The design of the horizontal elbow clamp and the vertical elbow clamp allows the operator to easily adjust and fix the position of the exhaust pipe, improving work efficiency.

[0014] 4. Enhanced flexibility: The movable clamp and pressure clamp settings allow for flexible fixing of exhaust pipes of different sizes and shapes.

[0015] 5. Precise adjustment: The combination of helical spring and guide shaft allows the clamping plate to provide a uniform and stable force when clamping the exhaust pipe, ensuring welding quality.

[0016] 6. Easy to maintain: The connecting plate is slidably mounted on the auxiliary slide rail via a slider, which facilitates daily cleaning and maintenance.

[0017] 7. Compact structure: The overall design is compact, saving space and suitable for use in limited working areas. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a side view of the structure of this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] In the diagram: 1. Base plate; 2. T-shaped fixing seat; 3. T-shaped placement slot; 4. Fixing plate; 5. Stop block; 6. Support platform; 7. Horizontal elbow clamp; 8. Moving clamp plate; 9. Vertical elbow clamp; 10. Downward clamp plate; 11. Elevation platform; 12. Connecting plate; 13. Auxiliary slide rail; 14. Slider; 15. Helical spring; 16. Guide shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a fixing device for welding automobile exhaust pipes, including a base plate 1, on the surface of which a T-shaped fixing seat 2 is provided. The structural design of the T-shaped fixing seat 2 includes a T-shaped placement groove 3. The chamfers inside the placement groove 3 are all designed as smooth arcs to accommodate exhaust pipe components of different sizes.

[0024] A fixing plate 4 is provided on one side of the T-shaped placement groove 3, and a stop block 5 is installed on the fixing plate 4 to fix the position of the exhaust pipe during the welding process. A support platform 6 is provided on the other side of the T-shaped placement groove 3. Both the support platform 6 and the fixing plate 4 can be firmly connected to the base plate 1 by bolts or other fixing methods.

[0025] A transverse elbow clamp 7 is provided on the support platform 6. The telescopic end of the transverse elbow clamp 7 is connected to a movable clamp 8. The movable clamp 8 can move along the telescopic direction of the transverse elbow clamp 7 to facilitate more precise positioning and fixation of the exhaust pipe.

[0026] On the other side of the base plate 1, specifically, a vertical elbow clamp 9 is provided. The telescopic end of the vertical elbow clamp 9 is connected to a pressure clamp 10. The pressure clamp 10 is located above the T-shaped placement groove 3 and is used to apply pressure to the exhaust pipe during the welding process to ensure the stability and accuracy of the exhaust pipe during the welding process.

[0027] To improve the connection strength between the vertical elbow clamp 9 and the base plate 1, a raised platform 11 is provided between the vertical elbow clamp 9 and the base plate 1. The raised platform 11 not only provides additional support, but also allows the height of the vertical elbow clamp 9 to be adjusted to accommodate exhaust pipe components of different heights.

[0028] Specifically, a connecting plate 12 is sleeved at the telescopic end of the transverse elbow clamp 7. The connecting plate 12 and the extending direction of the movable clamp 8 are parallel to each other, ensuring the stable movement of the movable clamp 8 in the transverse direction. In addition, an auxiliary slide rail 13 is provided on the base plate 1. The connecting plate 12 slides on the auxiliary slide rail 13 through the slider 14, thereby realizing the smooth movement of the movable clamp 8.

[0029] To ensure a more stable connection between the telescopic end of the lateral elbow clamp 7 and the movable clamp 8, specifically, the telescopic end of the lateral elbow clamp 7 is connected to the movable clamp 8 via a connecting plate 12, and a helical spring 15 is provided between the connecting plate 12 and the movable clamp 8. The function of the helical spring 15 is to provide a continuous elastic force, allowing the movable clamp 8 to automatically return to its initial position after being subjected to external force.

[0030] To ensure the stability and guidance of the helical spring 15 during operation, a guide shaft 16 is inserted inside the helical spring 15, and the guide shaft 16 passes through the connecting plate 12 and the movable clamping plate 8. This ensures that the helical spring 15 maintains the correct direction during extension and retraction, and avoids twisting or misalignment.

[0031] Working principle: When this utility model is in operation, the base plate 1 serves as the foundation of the entire device, providing stable support.

[0032] The T-shaped mounting bracket 2 is installed on the base plate 1 and is used to position and fix the exhaust pipe. The T-shaped placement slot 3 is located on the T-shaped mounting bracket 2 and is used to place the exhaust pipe. Its inner chamfer is designed to be arc-shaped to adapt to the arc shape of the exhaust pipe and ensure that the exhaust pipe can be placed stably.

[0033] The fixing plate 4 and the support platform 6 are respectively set on both sides of the T-shaped placement groove 3 and are fixedly connected to the base plate 1 to provide additional stability and support.

[0034] The lateral elbow clamp 7 is mounted on the support platform 6, and its telescopic end is connected to a movable clamping plate 8. The movable clamping plate 8 can move along the telescopic direction of the lateral elbow clamp 7 to clamp or release the exhaust pipe.

[0035] The vertical elbow clamp 9 is mounted on the base plate 1, located above the T-shaped placement slot 3, and its telescopic end is connected to the pressure clamp 10. The pressure clamp 10 can move downward to press the exhaust pipe placed in the T-shaped placement slot 3, ensuring its stability during welding.

[0036] The raised platform 11 is located between the vertical elbow clamp 9 and the base plate 1, and is used to adjust the height of the lower clamp 10 to accommodate exhaust pipes of different sizes.

[0037] The telescopic end of the lateral elbow clamp 7 is connected to the movable clamp 8 via the connecting plate 12. The connecting plate 12 can slide on the auxiliary slide rail 13 and is guided by the slider 14.

[0038] A helical spring 15 is disposed between the connecting plate 12 and the movable clamping plate 8 to provide a restoring force, ensuring that the movable clamping plate 8 can automatically return to its initial position after release.

[0039] The guide shaft 16 passes through the connecting plate 12 and the movable clamping plate 8 to ensure the correct position of the helical spring 15 and to provide additional stability.

[0040] In summary, this fixing device achieves stable positioning and clamping of the automobile exhaust pipe through the coordinated work of components such as the base plate, T-shaped fixing seat, fixing plate, support platform, lateral and vertical elbow clamps, and movable clamping plate, so as to carry out welding operations.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" 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 invention based on the specific circumstances.

[0042] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for welding automobile exhaust pipes, characterized in that: Includes a base plate (1), on which a T-shaped fixing seat (2) is provided, and on which a T-shaped placement groove (3) is provided, wherein the inner chamfer of the T-shaped placement groove (3) is arc-shaped; A fixing plate (4) is provided on one side of the T-shaped placement slot (3), and a stop block (5) is provided on the fixing plate (4). A support platform (6) is provided on the other side of the T-shaped placement slot (3). Both the support platform (6) and the fixing plate (4) can be fixedly connected to the base plate (1). The support platform (6) is provided with a transverse elbow clamp (7), and the telescopic end of the transverse elbow clamp (7) is provided with a movable clamp plate (8).

2. The fixing device for welding automobile exhaust pipes according to claim 1, characterized in that: The base plate (1) is provided with a vertical elbow clamp (9), and the telescopic end of the vertical elbow clamp (9) is provided with a pressing clamp (10), which is located above the T-shaped placement groove (3).

3. The fixing device for welding automobile exhaust pipes according to claim 2, characterized in that: A raised platform (11) is provided between the vertical elbow clamp (9) and the base plate (1).

4. The fixing device for welding automobile exhaust pipes according to claim 1, characterized in that: The telescopic end of the transverse elbow clamp (7) is fitted with a connecting plate (12). The extension direction of the connecting plate (12) is parallel to that of the moving clamp (8). An auxiliary slide rail (13) is provided on the base plate (1). The connecting plate (12) is slidably mounted on the auxiliary slide rail (13) by a slider (14).

5. The fixing device for welding automobile exhaust pipes according to claim 4, characterized in that: The telescopic end of the transverse elbow clamp (7) is connected to the movable clamp plate (8) through the connecting plate (12), and a helical spring (15) is provided between the connecting plate (12) and the movable clamp plate (8).

6. The fixing device for welding automobile exhaust pipes according to claim 5, characterized in that: The helical spring (15) is fitted with a guide shaft (16) which passes through the connecting plate (12) and the movable clamping plate (8).