A welding tool for a round flange

Abstract

The utility model discloses a kind of welding tool of round flange, belong to flange tool technical field.This kind of welding tool of round flange, including welding round table, the welding round table is the stepped cylindrical structure of big circle superimposed small circle, it is connected successively by multiple different outer diameter cylinders, and each outer diameter cylinder is adapted to one kind of inner diameter size round flange respectively, the table top of the welding round table is equipped with several fixed holes, the inner wall of the fixed hole is equipped with thread, the inboard of the fixed hole is equipped with fixed bolt, the fixed bolt includes head threaded section, middle limiting section and top nut connected successively, the head threaded section is engaged with the fixed hole by thread, the utility model can effectively realize the positioning of flange plate of different sizes, ensure that flange position is accurate in welding process, with higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of flange tooling technology, specifically a welding tooling for round flanges. Background Technology

[0002] Round flanges are common components of ventilation fans, and are mostly manufactured using laser cutting and welding. To ensure material utilization, the round flange is often cut apart during the cutting process and then welded together. Due to the butt weld and thermal deformation, the positional tolerances of the flange holes on the round flange are difficult to guarantee, which can lead to misalignment during installation.

[0003] Based on the above, the inventors have discovered the following problem: the current welding fixtures for round flanges are difficult to position flanges of different sizes during use, which affects user experience.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a welding fixture for a round flange in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this utility model is to provide a welding fixture for round flanges, so as to solve the problem mentioned in the background art that the current welding fixtures for round flanges are difficult to position flanges of different sizes during use, which affects the user's use.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows: A welding fixture for a round flange includes a welding frustum, which is a stepped cylindrical structure consisting of large circles superimposed with smaller circles. It is composed of cylinders with different outer diameters connected in sequence, and each cylinder with an outer diameter is adapted to a round flange with an inner diameter. The welding frustum has several fixing holes on its surface, and the inner wall of each fixing hole is threaded. A fixing bolt is installed on the inner side of each fixing hole. The fixing bolt includes a head threaded section, an intermediate limiting section, and a top nut connected in sequence. The head threaded section engages with the fixing hole through threads.

[0007] Furthermore, the outer diameter of the intermediate limiting section is consistent with the flange hole size on the circular flange to be welded, and the outer diameter of the top nut is larger than the outer diameter of the intermediate limiting section.

[0008] The beneficial effect of adopting the above-mentioned further solution is that by fixing the outer diameter of the middle limiting section of the bolt to match the flange hole size on the round flange to be welded, the flange can be positioned to prevent the flange from shifting during welding. The outer diameter of the top nut is larger than the middle limiting section, which can tighten the flange and ensure that the flange does not loosen during welding, thereby improving welding accuracy.

[0009] Furthermore, a cavity is provided at the bottom end of the welding frustum.

[0010] The beneficial effect of adopting the above-mentioned further solution is that by welding the cavity at the bottom of the frustum, the overall weight of the tooling is reduced, making it easier to handle and operate, while saving materials and reducing manufacturing costs.

[0011] Furthermore, in the stepped cylindrical structure of the welding frustum, the difference in outer diameter between two adjacent cylinders is a fixed value, and the height of each cylinder is the same.

[0012] The beneficial effect of adopting the above-mentioned further solution is that by fixing the difference in outer diameter of adjacent cylinders and ensuring that their heights are the same in the welded circular stepped cylindrical structure, the tooling structure becomes regular, which facilitates processing and manufacturing. At the same time, it makes it easier for operators to quickly identify the appropriate cylinders and improves the efficiency when changing flanges of different specifications.

[0013] Furthermore, the fixing holes are evenly distributed in a ring on the surface of the welding frustum, and the number of fixing holes is the same as the number of flange holes on the circular flange to be welded.

[0014] The beneficial effect of adopting the above-mentioned further solution is that by uniformly distributing the fixing holes in a ring on the welding frustum surface and having the same number as the flange holes on the flange to be welded, it is ensured that the fixing bolts can be evenly stressed to fix the flange, preventing the flange from deforming due to uneven stress and ensuring welding quality.

[0015] Furthermore, the head thread section, the middle limiting section, and the top nut of the fixing bolt are integrally formed.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by fixing the head thread section, the middle limiting section and the top nut of the bolt in one piece, the overall strength of the bolt is enhanced, the bolt is prevented from breaking due to stress during the welding process, and the service life of the tooling is extended.

[0017] Furthermore, the bottom of the welding frustum is provided with anti-slip texture.

[0018] The beneficial effect of adopting the above-mentioned further solution is that by welding the anti-slip texture on the bottom of the frustum, the friction between the tooling and the placement surface is increased, preventing the tooling from sliding during the welding process and ensuring the stability and safety of the welding operation.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: The welding fixture for the round flange, through the stepped cylindrical structure of the welding frustum, is composed of cylinders with various outer diameters, which can be adapted to round flanges with various inner diameters, realizing multi-purpose use of one fixture and improving the versatility of the equipment. The fixing holes and fixing bolts engage with each other, and the threaded section of the fixing bolt head, the intermediate limiting section, and the top nut cooperate to achieve a stable fixation of the round flange, ensuring accurate flange positioning during welding. The outer diameter of the intermediate limiting section of the fixing bolt matches the flange hole size on the round flange to be welded, achieving flange positioning and preventing flange displacement during welding. The outer diameter of the top nut is larger than the intermediate limiting section, which can tighten the flange, ensuring that the flange does not loosen during welding and improving welding accuracy. The cavity at the bottom of the welding frustum reduces the overall weight of the fixture, facilitating handling and operation, while saving materials and reducing manufacturing costs. The stepped cylindrical structure of the welding frustum... The fixed difference in outer diameter and identical height between adjacent cylinders ensure a regular tooling structure, facilitating manufacturing and allowing operators to quickly identify compatible cylinders, thus improving efficiency when changing flanges of different specifications. The fixing holes, evenly distributed in a ring on the welding frustum, match the number of flange holes on the flange to be welded, ensuring even force distribution on the fixing bolts and preventing flange deformation due to uneven stress, thus guaranteeing welding quality. The integrated molding of the bolt's threaded head, intermediate limiting section, and top nut enhances the bolt's overall strength, preventing bolt breakage during welding and extending the tooling's service life. The anti-slip texture on the bottom of the welding frustum increases friction between the tooling and the placement surface, preventing slippage during welding and ensuring stability and safety during the welding operation. This invention effectively positions flanges of different sizes, ensuring precise flange placement during welding and possessing high practical value. Attached Figure Description

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams disclosed in the embodiments of this utility model; Figure 2 This is the second three-dimensional structural schematic diagram disclosed in the embodiment of this utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the welding frustum disclosed in the embodiment of this utility model; Figure 4 This is a front view of an embodiment of the present utility model; Figure 5 This is a front view of the fixing bolt disclosed in an embodiment of this utility model.

[0021] In the diagram: 1. Welding frustum; 2. Fixing hole; 3. Fixing bolt; 301. Top nut; 302. Middle limiting section; 303. Head threaded section; 4. Anti-slip texture; 5. Cavity. Detailed Implementation

[0022] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0023] Example 1 Please see Figures 1-5 This utility model provides a technical solution: a welding fixture for a round flange, including a welding frustum 1. The welding frustum 1 is a stepped cylindrical structure with large circles superimposed on small circles, composed of cylinders of various outer diameters connected in sequence. Each outer diameter cylinder is adapted to a round flange with an inner diameter. Several fixing holes 2 are opened on the surface of the welding frustum 1. The inner wall of the fixing holes 2 is threaded. Fixing bolts 3 are installed on the inner side of the fixing holes 2. The fixing bolts 3 include a head threaded section 303 and an intermediate limiting section 30 connected in sequence. 2 and the top nut 301, the head thread section 303 and the fixing hole 2 are engaged by threads. The stepped cylindrical structure of the welding frustum 1 is composed of cylinders with different outer diameters, which can be adapted to round flanges with different inner diameters, realizing one tooling for multiple uses and improving the versatility of the equipment. The fixing hole 2 is engaged with the fixing bolt 3 by threads. The head thread section 303, the middle limiting section 302 and the top nut 301 of the fixing bolt 3 cooperate to achieve a stable fixation of the round flange and ensure the accurate position of the flange during the welding process.

[0024] Please see Figures 1-5 The outer diameter of the intermediate limiting section 302 is consistent with the flange hole size on the round flange to be welded. The outer diameter of the top nut 301 is larger than the outer diameter of the intermediate limiting section 302. A cavity 5 is provided at the bottom of the welding frustum 1. In the stepped cylindrical structure of the welding frustum 1, the difference in outer diameter between two adjacent cylinders is a fixed value, and the height of each cylinder is the same. By fixing the bolt 3, the outer diameter of the intermediate limiting section 302 is consistent with the flange hole size on the round flange to be welded, the flange is positioned to prevent the flange from shifting during welding. The outer diameter of the top nut 301 is larger than the intermediate limiting section 302, which can tighten the flange to ensure that the flange does not loosen during welding, thus improving welding accuracy. The cavity 5 at the bottom of the welding frustum 1 reduces the overall weight of the tooling, making it easier to handle and operate, while saving materials and reducing manufacturing costs. The fixed difference in outer diameter and the same height of adjacent cylinders in the stepped cylindrical structure of the welding frustum 1 make the tooling structure regular, which is easy to process and manufacture. At the same time, it is convenient for operators to quickly identify the appropriate cylinder, improving the efficiency of changing flanges of different specifications.

[0025] Please see Figures 1-5The fixing holes 2 are evenly distributed in a ring on the surface of the welding frustum 1. The number of fixing holes 2 is the same as the number of flange holes on the flange to be welded. The head thread section 303, the middle limiting section 302, and the top nut 301 of the fixing bolt 3 are integrally formed. The bottom of the welding frustum 1 is provided with anti-slip texture 4. The fixing holes 2 are evenly distributed in a ring on the surface of the welding frustum 1 and the number is the same as the number of flange holes on the flange to be welded. This ensures that the fixing bolt 3 can be evenly stressed to fix the flange, prevent the flange from deforming due to uneven stress, and ensure the welding quality. The integral forming of the head thread section 303, the middle limiting section 302, and the top nut 301 of the fixing bolt 3 enhances the overall strength of the bolt, avoids bolt breakage due to stress during welding, and extends the service life of the tooling. The anti-slip texture 4 on the bottom of the welding frustum 1 increases the friction between the tooling and the placement surface, prevents the tooling from sliding during welding, and ensures the stability and safety of the welding operation.

[0026] Working principle In use, the stepped cylindrical structure of the welding frustum 1, composed of cylinders with various outer diameters, can accommodate round flanges of various inner diameters, achieving multi-purpose tooling and improving equipment versatility. The fixing bolt 3 engages with the fixing hole 2, and the threaded section 303, intermediate limiting section 302, and top nut 301 of the fixing bolt 3 work together to securely fix the round flange, ensuring accurate flange positioning during welding. The outer diameter of the intermediate limiting section 302 of the fixing bolt 3 matches the flange hole size on the round flange to be welded, achieving flange positioning and preventing flange displacement during welding. The outer diameter of the top nut 301 is larger than the intermediate limiting section 302, which can tighten the flange, ensuring it does not loosen during welding and improving welding accuracy. The cavity 5 at the bottom of the welding frustum 1 reduces the overall weight of the tooling, facilitating handling and operation, while saving materials and reducing manufacturing costs. The difference in outer diameter between adjacent cylinders in the stepped cylindrical structure of the welding frustum 1 further contributes to the tooling's effectiveness. With fixed values ​​and uniform heights, the tooling structure is regular, facilitating processing and manufacturing. It also allows operators to quickly identify suitable cylinders, improving efficiency when changing flanges of different specifications. The fixing holes 2 are evenly distributed in a ring on the welding platform 1, with the number matching the number of flange holes on the flange to be welded. This ensures that the fixing bolts 3 can be evenly stressed to fix the flange, preventing deformation due to uneven stress and guaranteeing welding quality. The threaded section 303 at the head of the fixing bolt 3, the intermediate limiting section 302, and the top nut 301 are integrally formed, enhancing the overall strength of the bolt and preventing bolt breakage due to stress during welding, thus extending the tooling's service life. The anti-slip texture 4 at the bottom of the welding platform 1 increases friction between the tooling and the placement surface, preventing slippage during welding and ensuring the stability and safety of the welding operation. This invention effectively positions flanges of different sizes, ensuring accurate flange positioning during welding and possessing high practical value.

[0027] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not a limitation on the scope of protection of the present utility model. Based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.

Claims

1. A welding fixture for a round flange, characterized in that, The assembly includes a welding frustum (1), which is a stepped cylindrical structure consisting of a large circle superimposed with a small circle. It is composed of cylinders with different outer diameters connected in sequence. Each cylinder with an outer diameter is adapted to a circular flange with an inner diameter. The welding frustum (1) has several fixing holes (2) on its surface. The inner wall of the fixing hole (2) is threaded. The fixing bolt (3) is installed on the inner side of the fixing hole (2). The fixing bolt (3) includes a head threaded section (303), an intermediate limiting section (302), and a top nut (301) connected in sequence. The head threaded section (303) engages with the fixing hole (2) through threads.

2. The welding fixture for a round flange according to claim 1, characterized in that, The outer diameter of the intermediate limiting section (302) is consistent with the flange hole size on the circular flange to be welded, and the outer diameter of the top nut (301) is larger than the outer diameter of the intermediate limiting section (302).

3. The welding fixture for a round flange according to claim 1, characterized in that, The bottom end of the welding frustum (1) is provided with a cavity (5).

4. The welding fixture for a round flange according to claim 1, characterized in that, In the stepped cylindrical structure of the welding frustum (1), the difference in outer diameter between two adjacent cylinders is a fixed value, and the height of each cylinder is the same.

5. The welding fixture for a round flange according to claim 1, characterized in that, The fixing holes (2) are evenly distributed in a ring on the surface of the welding frustum (1), and the number of fixing holes (2) is the same as the number of flange holes on the circular flange to be welded.

6. The welding fixture for a round flange according to claim 1, characterized in that, The head thread section (303), the middle limiting section (302), and the top nut (301) of the fixing bolt (3) are integrally formed.

7. The welding fixture for a round flange according to claim 1, characterized in that, The bottom of the welding frustum (1) is provided with anti-slip texture (4).

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