Automobile special-shaped pipe welding tool

By designing a welding fixture for automotive irregular tubes with a combination of multiple limiting components and cylinder positioning pins, the problem of welding instability caused by simple fixtures was solved, achieving high-stability clamping and improved welding quality.

CN224196257UActive Publication Date: 2026-05-05盐城斯凯奇自动化设备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
盐城斯凯奇自动化设备有限公司
Filing Date
2025-05-23
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

The welding quality of existing automotive shaped tubes is unstable, mainly due to unstable clamping caused by simple fixtures.

Method used

A welding fixture for automotive irregular tubes was designed, which includes multiple limiting components to limit the bending tube, connector and connecting plate to ensure that the clamping position is consistent with the curvature of the bending tube. A combination structure of cylinder and positioning pin is used to achieve stable clamping.

Benefits of technology

It improves the stability and quality of welding, ensures the stability of clamping, and facilitates efficient welding.

✦ Generated by Eureka AI based on patent content.

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Abstract

The automobile special-shaped pipe welding tool comprises a special-shaped pipe, the special-shaped pipe comprises two bent pipes, a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are located at the two ends of the two bent pipes, and the middle positions of the two bent pipes are connected with a connecting plate; a base; the first limiting piece is used for limiting the connecting plate, and the first limiting piece is fixedly connected with the base; the second limiting piece is used for limiting the first connecting piece, and the second limiting piece is fixed on the left side of the base; the third limiting piece is used for limiting the second connecting piece, and the third limiting piece is fixed to the right side of the base; the fourth limiting piece is located between the first limiting piece and the second limiting piece and used for limiting the two bent pipes; the clamping positions of the first limiting piece, the second limiting piece, the third limiting piece and the fourth limiting piece are consistent with the radian of the bent pipe.
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Description

Technical Field

[0001] This utility model relates to tooling, specifically to a welding tooling for automotive irregular tubes. Background Technology

[0002] The welding of existing automotive shaped tubes is usually done manually using simple fixtures, resulting in inconsistent weld quality. Therefore, it is necessary to improve upon the shortcomings of the existing technology. Utility Model Content

[0003] This utility model discloses a welding fixture for automotive irregular-shaped tubes, comprising:

[0004] The irregular tube includes two bends and a first connector and a second connector located at both ends of the two bends, with a connecting plate connected in the middle of the two bends.

[0005] Base;

[0006] A first limiting member is used to limit the position of the connecting plate, and the first limiting member is fixedly connected to the base;

[0007] A second limiting member is used to limit the first connector, and the second limiting member is fixed to the left side of the base;

[0008] A third limiting member for limiting the second connector, the third limiting member being fixed to the right side of the base;

[0009] A fourth limiting member is located between the first limiting member and the second limiting member, and the fourth limiting member is used to limit the two bent pipes;

[0010] The clamping positions of the first, second, third, and fourth limiting members are consistent with the curvature of the bent pipe. This utility model limits the two bent pipes, the first connector, the second connector, and the connecting plate by setting the first, second, third, and fourth limiting members respectively, and makes their respective clamping positions consistent with the curvature of the bent pipe, resulting in high clamping stability and facilitating welding.

[0011] In one specific embodiment, the first limiting member includes a base and a first tilting cylinder mounted on the base. The upper end face of the base is provided with a bracket, and the bracket is provided with a first positioning pin. The connecting plate is placed on the bracket, and the output end of the first tilting cylinder is provided with a first pressure arm. The first pressure arm abuts against the bent pipe. The structure is simple and easy to implement.

[0012] In one specific embodiment, the second limiting member includes a mounting post fixedly connected to the base. A first cylinder and a second cylinder are provided on both sides of the mounting post. A second pressure arm and a third pressure arm are respectively connected to the output end of the first cylinder and the output end of the second cylinder. A second positioning pin is fixed to the end of the second pressure arm. A third positioning pin is provided on the mounting post. The workpiece is limited by the pin hole fit and interference fit. The structure is simple and the stability is high.

[0013] In one specific embodiment, the third limiting member includes a third cylinder and a fourth pressure arm and a fifth pressure arm disposed at the output end of the third cylinder. A fixing plate is fixed on the base, and a fourth positioning pin is provided on the fixing plate. The structure is simple and easy to implement.

[0014] In one specific embodiment, the fourth limiting member includes a mounting base and a fourth cylinder disposed on the mounting base. The mounting base is provided with a retaining plate, and the output end of the fourth cylinder is provided with a sixth pressure arm, which has a good limiting effect and a stable structure.

[0015] Beneficial effects: This utility model limits the two bent pipes, the first connecting piece, the second connecting piece, and the connecting plate by setting the first limiting piece, the second limiting piece, the third limiting piece, and the fourth limiting piece, respectively, and makes the clamping position consistent with the curvature of the bent pipe, so that the clamping stability is high and welding is convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a welding fixture for automotive irregular tubes according to this embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of the irregular-shaped tube;

[0018] Figure 3 This is a structural schematic diagram of the first limiting component;

[0019] Figure 4 This is a structural schematic diagram of the second limiting component;

[0020] Figure 5 This is a structural schematic diagram of the third limiting component;

[0021] Figure 6 This is a structural schematic diagram of the fourth limiting component;

[0022] In the diagram: 200, irregular tube; 100, welding fixture; 1, base; 2, first limiting component; 20, first tilting cylinder; 21, first positioning pin; 22, first pressure arm; 23, bracket; 201, bent pipe; 202, first connecting component; 203, connecting plate; 204, second connecting component; 3, second limiting component; 30, first cylinder; 31, second cylinder; 32, second pressure arm; 33, third pressure arm; 34, second positioning pin; 4, third limiting component; 40, third cylinder; 41, fourth pressure arm; 42, fixing plate; 5, fourth limiting component; 50, mounting base; 51, fourth cylinder; 52, clamping plate. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "counterclockwise," "clockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0026] See Figures 1-6This embodiment provides a welding fixture 100 for automotive shaped tubes, comprising a shaped tube 200, wherein the shaped tube 200 includes two bent tubes 201 and a first connector 202 and a second connector 204 located at both ends of the two bent tubes 201, and a connecting plate 203 connected between the two bent tubes 201; a base 1; a first limiting member 2 for limiting the connecting plate 203, the first limiting member 2 being fixedly connected to the base 1; a second limiting member 3 for limiting the first connector 202, the second limiting member 3 being fixed to the left side of the base 1; and a third limiting member 4 for limiting the second connector 204, the third limiting member 4 being fixed to the base 1. On the right side of the base 1, a fourth limiting member 5 is located between the first limiting member 2 and the second limiting member 3. The fourth limiting member 5 is used to limit the two bent pipes 201. The clamping positions of the first limiting member 2, the second limiting member 3, the third limiting member 4 and the fourth limiting member 5 are consistent with the curvature of the bent pipe 201. This utility model limits the two bent pipes 201, the first connecting member 202, the second connecting member 204 and the connecting plate 203 respectively by setting the first limiting member 2, the second limiting member 3, the third limiting member 4 and the fourth limiting member 5, and makes their respective clamping positions consistent with the curvature of the bent pipe 201, which has high clamping stability and facilitates welding.

[0027] See Figure 3 The first limiting member 2 includes a base and a first flip cylinder 20 installed on the base. The upper end face of the base is provided with a bracket 23. The bracket 23 is provided with a first positioning pin 21. The connecting plate 203 is placed on the bracket 23. The output end of the first flip cylinder 20 is provided with a first pressure arm 22. The first pressure arm 22 abuts against the bent pipe 201. The structure is simple and easy to implement.

[0028] See Figure 4 The second limiting member 3 includes a mounting post fixedly connected to the base 1. A first cylinder 30 and a second cylinder 31 are provided on both sides of the mounting post. The output ends of the first cylinder 30 and the second cylinder 31 are respectively connected to a second pressure arm 32 and a third pressure arm 33. A second positioning pin 34 is fixed at the end of the second pressure arm 32. A third positioning pin is provided on the mounting post. The workpiece is limited by the pin hole fit and interference fit. The structure is simple and the stability is high.

[0029] See Figure 5 The third limiting member 4 includes a third cylinder 40 and a fourth pressure arm 41 and a fifth pressure arm located at the output end of the third cylinder 40. A fixing plate 42 is fixed on the base 1, and a fourth positioning pin is provided on the fixing plate 42. The structure is simple and easy to implement.

[0030] See Figure 6The fourth limiting member 5 includes a mounting base 50 and a fourth cylinder 51 disposed on the mounting base 50. The mounting base 50 is provided with a clamping plate 52, and the output end of the fourth cylinder 51 is provided with a sixth pressure arm. The limiting effect is good and the structure is stable.

[0031] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A welding fixture for automotive irregular-shaped tubes, characterized in that, include: The irregular tube includes two bends and a first connector and a second connector located at both ends of the two bends, with a connecting plate connected in the middle of the two bends. Base; A first limiting member is used to limit the position of the connecting plate, and the first limiting member is fixedly connected to the base; A second limiting member is used to limit the first connector, and the second limiting member is fixed to the left side of the base; A third limiting member for limiting the second connector, the third limiting member being fixed to the right side of the base; A fourth limiting member is located between the first limiting member and the second limiting member, and the fourth limiting member is used to limit the two bent pipes; The clamping positions of the first, second, third, and fourth limiting members are consistent with the curvature of the bent pipe.

2. The welding fixture for automotive irregular-shaped tubes as described in claim 1, characterized in that: The first limiting component includes a base and a first tilting cylinder mounted on the base. The upper end face of the base is provided with a bracket, and the bracket is provided with a first positioning pin. The connecting plate is placed on the bracket, and the output end of the first tilting cylinder is provided with a first pressure arm, which abuts against the bent pipe.

3. The welding fixture for automotive irregular-shaped tubes as described in claim 2, characterized in that: The second limiting member includes a mounting column fixedly connected to the base. A first cylinder and a second cylinder are provided on both sides of the mounting column. A second pressure arm and a third pressure arm are respectively connected to the output end of the first cylinder and the output end of the second cylinder. A second positioning pin is fixed to the end of the second pressure arm. A third positioning pin is provided on the mounting column.

4. The welding fixture for automotive irregular-shaped tubes as described in claim 3, characterized in that: The third limiting component includes a third cylinder and a fourth pressure arm and a fifth pressure arm located at the output end of the third cylinder. A fixing plate is fixed on the base, and a fourth positioning pin is provided on the fixing plate.

5. The welding fixture for automotive irregular-shaped tubes as described in claim 4, characterized in that: The fourth limiting member includes a mounting base and a fourth cylinder disposed on the mounting base. The mounting base is provided with a retaining plate, and the output end of the fourth cylinder is provided with a sixth pressure arm.