pneumatic tooling for welding inclined tubes
By designing a pneumatic tooling fixture for welding the front inclined tube, high-precision positioning and multi-angle adaptation were achieved, solving the problems of unstable welding quality and low efficiency of existing welding fixtures, and improving the welding efficiency and quality of tricycle production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI HUAIHAI AUTOMOBILE IND CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-30
AI Technical Summary
Existing welding fixtures suffer from inconsistent welding quality and low production efficiency in tricycle production, and their use is limited because they cannot adjust the angle of the front tube as needed.
A pneumatic tooling for welding a front inclined tube was designed, including a welding platform, a front inclined tube body positioning reference assembly, and a fixed beam positioning reference assembly. It utilizes cylinders and clamps to achieve high-precision positioning and multi-angle adaptation, and is equipped with threaded balancing pads and limit plates to improve stability.
It provides a high-precision welding platform, simplifies the operation process, adapts to the welding needs of car head tubes at various angles, and improves production efficiency and welding quality.
Smart Images

Figure CN224424723U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a welding fixture, specifically a pneumatic fixture for welding a front inclined tube. Background Technology
[0002] In the tricycle manufacturing process, the welding quality of the head tube is crucial. Traditional manual clamping welding methods suffer from drawbacks such as inconsistent welding quality and low production efficiency. With the increasing development of robotic welding technology, many companies are adopting this technology to improve production efficiency and welding quality. However, current welding fixtures often have cumbersome procedures when positioning and clamping the head tube, which makes it difficult to fully utilize the advantages of robotic welding, resulting in low production efficiency.
[0003] Currently, utility model patent CN206567719U discloses a welding fixture for the front body components of a motorcycle frame, including: a base plate, a head tube positioning assembly, and a front slant tube positioning assembly. The head tube positioning assembly includes a head tube base for supporting the head tube and a head tube pressure rod for pressing the head tube onto the head tube base. The front slant tube positioning assembly includes a vertically arranged support plate and a front slant tube pressure rod for pressing the bottom of the front slant tube onto the support plate. The head tube base, support plate, and front slant tube pressure rod are all fixed to the base plate. When fixing the head tube and front slant tube, the front left and front right parts of the frame, which are initially fixed to the front slant tube, should correspond to the positions on the head tube to be welded. Then, welding operations can be performed on the joints on the front left and front right parts of the frame, as well as the joints between these two components and the side wall of the head tube, thus improving the welding effect and welding efficiency.
[0004] As can be seen from the above-disclosed technical content, as prior art, the utility model with announcement number CN206567719U achieves welding assistance for the front body component of the motorcycle frame through its own design. However, this patent has few fixing points and cannot adjust the angle of the head tube as needed, which limits its use. Utility Model Content
[0005] To address the problems existing in the prior art, this utility model provides a pneumatic tooling for welding front inclined tubes, which can perform high-precision welding and is easy to operate, and can adapt to various angles of the head tube.
[0006] To achieve the above objectives, this utility model provides a pneumatic tooling for welding a front inclined tube, including a welding platform and a front inclined tube body positioning reference assembly and a front inclined tube fixing beam positioning reference assembly fixedly mounted on the welding platform. The front inclined tube body positioning reference assembly includes a front inclined tube vertical fixing cylinder and a front inclined tube vertical positioning support block positioned corresponding to the front inclined tube body. The front inclined tube vertical fixing cylinder and the front inclined tube vertical positioning support block are respectively fixedly mounted on the frame by a bracket, with the lower end of the front inclined tube vertical fixing cylinder facing the front inclined tube vertical positioning support block.
[0007] The positioning reference assembly for the front inclined tube fixed beam includes a mid-positioning fixture, a mid-positioning block, a fixing cylinder, and a tail-positioning block, all positioned corresponding to the front inclined tube fixed beam. The mid-positioning fixture and the mid-positioning block are mounted on the frame via brackets. The tail-positioning block is fixedly mounted on the frame surface, and the fixing cylinder is fixedly mounted on the frame via brackets.
[0008] In addition, the pneumatic tooling for welding the inclined tube according to the above embodiments of this utility model may also have the following additional technical features:
[0009] As a further improvement of this utility model, the fixed beam fixing cylinder control lever and the front inclined tube vertical fixing cylinder control lever respectively control the fixed beam fixing cylinder and the front inclined tube vertical fixing cylinder through pipelines.
[0010] As a further improvement of this utility model, the positioning clamp at the middle of the fixed beam is manually controlled.
[0011] As a further improvement of this utility model, the bottom of the frame is provided with a threaded balancing pad.
[0012] As a further improvement of this utility model, limiting plates are provided on both sides of the positioning block at the tail of the fixed beam.
[0013] By means of the above solution, this utility model has at least the following advantages: the positioning of the front inclined tube body and the front inclined tube fixed beam is achieved by the positioning reference component of the front inclined tube body and the positioning reference component of the front inclined tube fixed beam, which can provide a high-precision welding platform for the welding robot and the overall operation of the equipment is simple. At the same time, with the help of the optimized design of the positioning reference component of the front inclined tube fixed beam, the production line can adapt to the front tubes of various angles, and is particularly suitable for the welding work of the front inclined tubes of tricycles. Attached Figure Description
[0014] Figure 1 It is a 3D view of the pneumatic tooling for welding the front inclined tube;
[0015] Figure 2 This is a side view of the front inclined tube;
[0016] Figure 3 This is a 3D view of the working state of the pneumatic tooling for welding the front inclined tube;
[0017] In the diagram: 1. Front inclined tube; 101. Front inclined tube body; 102. Front inclined tube fixing beam; 2. Welding platform; 201. Front inclined tube vertical fixing cylinder; 202. Front inclined tube vertical positioning block; 203. Fixing beam middle positioning clamp; 204. Fixing beam middle positioning block; 205. Fixing beam fixing cylinder; 206. Fixing beam tail positioning block; 207. Fixing beam fixing cylinder control lever; 208. Front inclined tube vertical fixing cylinder control lever; 209. Frame. Detailed Implementation
[0018] The following description, in conjunction with the accompanying drawings, describes the pneumatic tooling for welding the inclined tube of this utility model.
[0019] In the embodiments of this application, such as Figures 1 to 3 As shown, this pneumatic tooling for welding inclined tubes (hereinafter referred to as "the present invention") includes a welding platform 2 and a positioning reference assembly for the inclined tube body and a positioning reference assembly for the inclined tube fixing beam, both fixedly mounted on the welding platform 2. The positioning reference assembly for the inclined tube body includes a vertical fixing cylinder 201 and a vertical positioning support block 202 for the inclined tube body 101, which are positioned corresponding to the position of the inclined tube body 101. The vertical fixing cylinder 201 and the vertical positioning support block 202 are respectively fixedly mounted on the frame 209 by brackets. The lower end of the vertical fixing cylinder 201 faces the vertical beam of the inclined tube. The positioning support block 202; the positioning reference assembly for the front inclined tube fixing beam includes a fixing beam mid-positioning clamp 203, a fixing beam mid-positioning block 204, a fixing beam fixing cylinder 205, and a fixing beam tail-positioning block 206, all positioned corresponding to the front inclined tube fixing beam 102. The fixing beam mid-positioning clamp 203 and the fixing beam mid-positioning block 204 are respectively mounted on the frame 209 via brackets. The fixing beam tail-positioning block 206, corresponding to the tail of the front inclined tube fixing beam 102, is fixedly mounted on the surface of the frame 209. The fixing beam fixing cylinder 205 is fixedly mounted on the frame 209 via brackets. The fixing beam fixing cylinder control lever 207 and the front inclined tube vertical fixing cylinder control lever 208 control the fixing beam fixing cylinder 205 and the front inclined tube vertical fixing cylinder 201 respectively via pipelines. The fixing beam mid-positioning clamp 203 is manually controlled, and the clamping force of the fixing beam mid-positioning clamp 203 is precisely controlled via threads.
[0020] The utility model patent CN206567719U discloses a welding fixture for the front body component of a motorcycle frame (hereinafter referred to as "the patent"). The patent assists in the welding of the front body component of the motorcycle frame through its own design. However, the patent has few fixing points and cannot adjust the angle of the head tube as needed, which limits its use. In contrast, the present invention uses an optimized front inclined tube fixing beam positioning reference component to allow the production line to adapt to head tubes of various angles.
[0021] To further optimize the working efficiency of this application and ensure stability during welding, the bottom of the frame 209 is provided with a threaded balancing pad. To improve the limiting capability, limiting plates are provided on both sides of the positioning block 206 at the tail of the fixed beam.
[0022] When in use, install the pneumatic tooling for welding the front inclined tube and connect it to the corresponding pipeline equipment, and it can be put into use.
[0023] When this utility model is used, its specific operation is as follows:
[0024] When using, such as Figure 3 As shown, first, the front inclined tube body 101 is placed vertically on the front inclined tube vertical positioning block 202. Then, the front inclined tube vertical fixing cylinder 201 is lowered by the front inclined tube vertical fixing cylinder control lever 208 to fix the front inclined tube body 101. Next, the tail end of the front inclined tube fixing beam 102 is placed into the fixing beam tail positioning block 206, and the upper end of the front inclined tube fixing beam 102 is moved to a suitable position. The fixing beam fixing cylinder 205 is clamped by the fixing beam fixing cylinder control lever 207. Finally, the fixing beam middle positioning fixture 203 is turned, and the front inclined tube vertical positioning block 202 is used to make the front inclined tube fixing beam 102 enter the welding reference plane, and the welding robot can start welding. Since the mid-positioning fixture 203 and the mid-positioning block 204 of the fixed beam clamp the front inclined tube fixed beam 102 from both sides, the tooling can adapt to various specifications of the front inclined tube fixed beam 102 by means of a large contact area, thereby achieving the purpose of corresponding to the front inclined tube body 101 at various angles.
[0025] In summary, the pneumatic tooling for welding the front inclined tube in this embodiment of the present invention achieves the positioning of the front inclined tube body 101 and the front inclined tube fixed beam 102 through the front inclined tube body positioning reference component and the front inclined tube fixed beam positioning reference component. It can provide a high-precision welding platform for welding robots and the overall operation of the equipment is simple. At the same time, with the help of the optimized design of the front inclined tube fixed beam positioning reference component, the production line can adapt to the front tubes of various angles, and it is particularly suitable for welding the front inclined tubes of tricycles.
[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.
Claims
1. A pneumatic tooling for welding a front inclined tube, comprising a welding platform (2) and a front inclined tube body positioning reference assembly and a front inclined tube fixed beam positioning reference assembly fixedly mounted on the welding platform (2), characterized in that, The aforementioned front inclined tube body positioning reference assembly includes a front inclined tube vertical fixing cylinder (201), a front inclined tube vertical positioning support block (202), and a front inclined tube vertical fixing cylinder control lever (208) positioned corresponding to the front inclined tube body (101). The front inclined tube vertical fixing cylinder (201) and the front inclined tube vertical positioning support block (202) are respectively fixedly installed on the frame (209) by brackets, with the lower end of the front inclined tube vertical fixing cylinder (201) facing the front inclined tube vertical positioning support block (202). The positioning reference assembly for the front inclined tube fixed beam includes a mid-positioning fixture (203), a mid-positioning block (204), a fixing cylinder (205), a tail-positioning block (206), and a control lever (207) for the fixing cylinder, all positioned at the position corresponding to the front inclined tube fixed beam (102). The mid-positioning fixture (203) and the mid-positioning block (204) are mounted on the frame (209) via brackets. The tail-positioning block (206) is fixedly mounted on the surface of the frame (209) at the tail of the front inclined tube fixed beam (102). The fixing cylinder (205) is fixedly mounted on the frame (209) via brackets.
2. The pneumatic tooling for welding inclined tubes according to claim 1, characterized in that, The fixed beam fixing cylinder control lever (207) and the front inclined tube vertical fixing cylinder control lever (208) control the fixed beam fixing cylinder (205) and the front inclined tube vertical fixing cylinder (201) respectively through pipelines.
3. The pneumatic tooling for welding the inclined tube according to claim 2, characterized in that, The fixed beam mid-positioning clamp (203) is manually controlled.
4. The pneumatic tooling for welding inclined tubes according to claim 1, characterized in that, The bottom of the frame (209) is provided with a threaded balancing pad.
5. The pneumatic tooling for welding the inclined tube according to claim 4, characterized in that, The fixed beam tail positioning block (206) is provided with limiting plates on both sides.