Welding positioning tool for water distributor

Abstract

This utility model discloses a welding positioning fixture for a water distributor, including a positioning platform, a first positioning component, and a second positioning component. The first positioning component includes a first positioning disk and a second positioning disk coaxially arranged, and a connecting part vertically fixed between the first and second positioning disks. The second positioning component includes a plurality of identical second positioning elements spaced at equal angles along the outer periphery of the first positioning component. Each second positioning element includes a fixing part fixed to the upper surface of a positioning base plate and two positioning clamps symmetrically arranged on the fixing part. The positioning clamps are vertically arranged on the surface of the fixing part, and a limiting space is formed between the two positioning clamps. This solution has universal adaptability. Through the cooperation of multiple separate positioning component structures, it effectively eliminates positioning errors caused by welding thermal deformation, reduces welding scrap rate, and improves stability.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures for water distributors, and in particular to a welding positioning fixture for water distributors. Background Technology

[0002] As a crucial component of a piping system, the welding quality of the manifold directly affects the uniformity of fluid distribution and the reliability of equipment operation. Common manifolds include... Figure 1 As shown, it includes a hollow tube and multiple blades distributed around the outer periphery of the hollow tube for diversion. Depending on the diversion requirements, the number of blades distributed around the hollow tube in different diverters will be adjusted accordingly; common diverters have eight or four blades. In the traditional diverter welding process, operators mainly rely on manual positioning of each connecting pipe, resulting in low positioning accuracy and poor consistency. Existing welding fixtures mostly adopt fixed positioning structures, which can ensure the positioning requirements of a single product model. For example, the utility model patent with authorization announcement number CN219900922U discloses an auxiliary fixture for diverter production, including a support component and multiple anti-deformation mechanisms. The downward pressing structure presses down on the wall of the stainless steel pipe next to the welding position, preventing the stainless steel pipe from bulging and deforming due to heat, improving welding quality, thereby ensuring the quality of the diverter and reducing safety hazards. This auxiliary tooling is mainly used for positioning the stainless steel pipes and the manifold. The manifold is fixed using only a simple groove, without dedicated tooling for different manifold specifications, leading to a significant increase in equipment investment costs. Secondly, when the product needs to adjust the connection angle or arrangement, the existing tooling lacks rapid adjustment capabilities. Furthermore, during welding, positioning deviations can easily cause concentricity shifts and uneven end faces, especially for multi-branch, irregularly shaped manifolds. Traditional positioning methods struggle to ensure the spatial accuracy of each connecting pipe, often requiring repeated adjustments, severely impacting welding efficiency. Therefore, there is an urgent need to develop a universal welding positioning device that is highly adaptable, rapidly adjustable, and can guarantee multi-dimensional accuracy requirements. Utility Model Content

[0003] Therefore, in order to solve the above problems, this utility model provides a welding positioning fixture for a water distributor.

[0004] This utility model is achieved through the following technical solution:

[0005] A welding positioning fixture for a water distributor includes:

[0006] The positioning platform includes a positioning base plate for supporting the water distributor and a support frame disposed at the bottom of the positioning base plate for supporting the positioning base plate and raising the positioning base plate.

[0007] The first positioning component includes a first positioning disk and a second positioning disk coaxially arranged, and a connecting part vertically fixed between the first positioning disk and the second positioning disk. The first positioning disk is detachably connected to the upper surface of the positioning base plate, and the axis of the first positioning disk passes through the midpoint of the positioning base plate. The diameter of the first positioning disk is smaller than the diameter of the second positioning disk, and a positioning mark is formed at the inner peripheral edge of the second positioning disk.

[0008] The second positioning component includes a plurality of second positioning members of the same shape that are spaced at equal angles along the outer periphery of the first positioning component. Each second positioning member includes a fixing part fixed to the upper surface of the positioning base plate and two positioning clamps symmetrically arranged on the fixing part. The positioning clamps are vertically arranged on the surface of the fixing part, and a limiting space is formed between the two positioning clamps.

[0009] Preferably, the bottom of the second positioning disk protrudes downward and forms a circular positioning step coaxial with the second positioning disk. The diameter of the positioning step is smaller than the diameter of the second positioning disk, thereby forming an annular clearance groove on the outer periphery of the positioning step. Multiple positioning bosses are arranged circumferentially on the outer periphery of the positioning step.

[0010] Preferably, the positioning mark includes a positioning notch disposed on the edge of the inner periphery of the second positioning disk, the positioning notch being located on the top of one of the positioning bosses.

[0011] Preferably, the connecting member between the first positioning plate and the second positioning plate includes an integrally formed first insertion plate and a second insertion plate. The first insertion plate and the second insertion plate are arranged in a cross shape, and both ends of the first insertion plate and the second insertion plate are provided with a plurality of insertion blocks. The first positioning plate and the second positioning plate are provided with insertion holes that match the insertion blocks at the ends of the first insertion plate and the second insertion plate, so that the insertion blocks located at the bottom of the first insertion plate and the second insertion plate are all inserted into the insertion holes on the first positioning plate, and the insertion blocks located at the top of the first insertion plate and the second insertion plate are all inserted into the insertion holes on the first positioning plate.

[0012] Preferably, the positioning substrate has a plurality of first positioning holes for positioning the first positioning disk at equal angles along the outer periphery of its axis. The distance between the first positioning hole and the axis of the positioning substrate is less than the radius of the first positioning disk. The first positioning disk has first mounting holes that correspond one-to-one with the first positioning holes. A first positioning screw passes through each of the first positioning holes and its corresponding first mounting holes.

[0013] Preferably, the positioning clamp is a right-angled triangular positioning clamp, and one right-angled side of the two positioning clamps on the same second positioning member is disposed opposite to each other on both sides of the limiting space, and the other right-angled side of the positioning clamp is fixed to the surface of the fixing member.

[0014] Preferably, the positioning base plate is provided with four second positioning holes corresponding to each second positioning member, and the fixing part of each second positioning member is provided with four second mounting holes corresponding to the second positioning holes one by one. A second positioning screw is passed through each of the second positioning holes and their corresponding second mounting holes.

[0015] Preferably, the positioning base plate is provided with a plurality of third positioning holes for positioning the water distributor at equal angles along its axis, and the third positioning holes are located between the first positioning holes and the second positioning holes.

[0016] Preferably, the support frame includes a rectangular support frame disposed at the bottom of the perimeter of the positioning base plate and two support beams disposed parallel to each other within the support frame.

[0017] The beneficial effects of this utility model's technical solution are mainly reflected in:

[0018] 1. The welding positioning fixture for the water distributor forms a composite positioning system through the circumferentially distributed second positioning components and the centrally located first positioning component. By adjusting the installation position and angle of each positioning component, it can quickly adapt to water distributor products with different pipe diameters, branch numbers, and spatial arrangements, improving the universality and adaptability of the positioning fixture and significantly reducing the fixture configuration cost. The second positioning component not only accurately positions the blades of the water distributor but also provides preliminary positioning for the subsequent fixing of the hollow tube of the water distributor to the positioning base plate. Meanwhile, the first positioning component is detachably connected to the positioning base plate and the hollow tube, so that the water distributor can be firmly fixed on the positioning base plate during welding. After the water distributor welding is completed, the first positioning component and the water distributor are disassembled from the positioning base plate.

[0019] 2. The first positioning component set at the center of the positioning base plate and the second positioning component set around the circumference of the first positioning component form a three-dimensional spatial positioning network, which can simultaneously constrain the radial displacement, axial movement and angular deviation of the water distributor, reduce the concentricity error and flatness deviation of the welded product, and achieve the requirements of precision welding. Multi-dimensional precision control of the water distributor is achieved through the multi-level positioning structure. In addition, the cooperation of multiple split positioning components effectively eliminates the positioning error caused by welding thermal deformation, which can reduce the welding scrap rate and improve stability.

[0020] 3. The standardized assembly hole system and adjustable fixing mechanism are adopted. When changing models, only the installation position of the positioning component needs to be adjusted and the screws tightened. There is no need to replace the main tooling body, which shortens the conversion time and improves the welding efficiency of the water distributor. At the same time, each positioning module is set independently and adopts a detachable connection method. After local wear, it can be replaced and maintained individually. Compared with the integral tooling, it can reduce maintenance costs and improve the maintenance convenience of the positioning tooling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the water distributor in Example 1;

[0022] Figure 2 This is a schematic diagram of the assembly state of a water distributor with eight blades and a welding positioning fixture for the water distributor.

[0023] Figure 3 This is a schematic diagram of the assembly state of a water distributor with four blades and a welding positioning fixture for the water distributor.

[0024] Figure 4 This is a bottom view of the welding positioning fixture for the water distributor;

[0025] Figure 5 This is a top view of the welding positioning fixture for the water distributor before the first positioning component is installed.

[0026] Figure 6 This is a side view of the welding positioning fixture for the water distributor when the first positioning component is not installed.

[0027] Figure 7 This is a 3D view of the welding positioning fixture for the water distributor before the first positioning component is installed.

[0028] Figure 8 This is a structural schematic diagram of the first positioning component;

[0029] Figure 9 This is a bottom view of the first positioning component. Detailed Implementation

[0030] To make the objectives, advantages, and features of this utility model clearer and more detailed, the following non-limiting description of preferred embodiments will be illustrated and explained. These embodiments are merely typical examples of applying the technical solutions of this utility model; any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0031] It should also be stated that, in the description of the solution, the terms "center", "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0032] Furthermore, the terms "first" and "second" in this solution are used for descriptive purposes only and should not be construed as indicating or implying a ranking of importance, or implicitly specifying the number of technical features shown. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0033] This utility model discloses a welding positioning fixture for a water distributor, wherein, as shown in the figure... Figures 1-3 As shown, the water distributor 100 typically includes a hollow tube 200 disposed in the center and a plurality of blades 300 distributed around the outer periphery of the hollow tube 200 for diverting water.

[0034] Among them, such as Figures 2-9 As shown, the welding positioning fixture for the water distributor includes:

[0035] The positioning platform includes a positioning base plate 1 for supporting the water distributor 100 and a support frame 2 set at the bottom of the positioning base plate 1 for supporting the positioning base plate 1 and raising the positioning base plate 1. The setting of the support frame 2 should ensure the stability of the positioning base plate 1 and reserve a part of the bottom of the positioning base plate 1 to avoid the installation of subsequent positioning components.

[0036] It also includes a first positioning component for fixing the hollow tube 200 of the water distributor 100, including a first positioning disk 4 and a second positioning disk 5 coaxially arranged, and a connecting part 6 vertically fixed between the first positioning disk 4 and the second positioning disk 5. The first positioning disk 4 is detachably connected to the upper surface of the positioning base plate 1, and the axis of the first positioning disk 4 passes through the midpoint of the positioning base plate 1, thereby ensuring that the hollow tube 200 of the water distributor 100 is also located at the center of the positioning platform when positioned by the first positioning component. The diameter of the first positioning disk 4 is smaller than the diameter of the second positioning disk 5. Specifically, the shape and diameter of the second positioning disk 5 are preferably matched with the center hole 400 of the hollow tube 200 of the water distributor 100, thereby ensuring the accuracy of the positioning of the hollow tube 200.

[0037] It also includes a second positioning component, which includes a plurality of second positioning members of the same shape that are spaced at equal angles along the outer periphery of the first positioning component. Each of the second positioning members includes a fixing part fixed to the upper surface of the positioning base plate 1 and two positioning clamps 13 symmetrically arranged on the fixing part. The positioning clamps 13 are vertically arranged on the surface of the fixing part, and a limiting space is formed between the two positioning clamps 13. The limiting space is used to limit the blades 300 of the water distributor 100.

[0038] In some embodiments, the number of the second positioning elements and the angle and position of each second positioning element on the positioning base plate 1 can be adjusted according to the type of the water distributor 100 to be positioned. In a preferred embodiment, eight second positioning elements are arranged at equal angles on the outer periphery of the first positioning component, such as... Figure 2 As shown, at this time, eight blades 300 are equidistantly arranged on the outer periphery of the hollow tube 200 of the water distributor 100. Each blade 300 is fixed within the limiting space of its corresponding second positioning element; for example... Figure 3 As shown, at this time, four blades 300 are equally angled on the outer periphery of the hollow tube 200 of the water distributor 100. The positioning structure with eight second positioning members can still be used. Each blade 300 is also positioned by its corresponding second positioning member. At the same time, there is a second positioning member for an unpositioned blade 300 between two adjacent blades 300. In addition, the number and fixed position of the second positioning members can also have various other forms, which will not be elaborated here.

[0039] like Figure 8 , Figure 9 As shown, in one embodiment, the bottom of the second positioning disk 5 protrudes downward and forms a circular positioning step 8 coaxial with the second positioning disk 5. The diameter of the positioning step 8 is smaller than the diameter of the second positioning disk 5, thereby forming an annular clearance groove 10 around the outer periphery of the positioning step 8. Multiple positioning bosses 9 are arranged circumferentially around the outer periphery of the positioning step 8. Corresponding to the above structure, the hollow tube 200 of the water distributor 100 has multiple positioning grooves 500 that correspond one-to-one with the positioning bosses 9 along the outer periphery of its central hole 400. The diameter of the central hole 400 is the same as the diameter of the positioning step 8, thereby ensuring that when the first positioning component matches the hollow tube 200, the positioning step 8 is precisely embedded in the central hole 400, and the positioning bosses 9 on the outer periphery of the positioning step 8 are also inserted into the positioning grooves 500 one-to-one. At this time, the second positioning disk 5 abuts against the upper surface of the hollow tube 200, and the positioning angle of the hollow tube 200 can be determined by the positioning marks on the second positioning disk 5.

[0040] like Figure 8 , Figure 9As shown, in one embodiment, the positioning mark includes a positioning notch 11 located at the edge of the inner periphery of the second positioning disk 5. The positioning notch 11 is located on the top of one of the positioning bosses 9. Since the upper surface of the hollow tube 200 is provided with a positioning groove 500 corresponding to the position of the positioning boss 9, when the first positioning component matches the position of the hollow tube 200, it can be observed through the positioning notch 11 whether the positioning boss 9 at its bottom matches the positioning groove 500, thereby ensuring the accuracy of the positioning angle of the water distributor 100.

[0041] like Figure 8 , Figure 9 As shown, in one embodiment, the connecting member between the first positioning plate 4 and the second positioning plate 5 includes an integrally formed first insertion plate 601 and a second insertion plate 602. The first insertion plate 601 and the second insertion plate 602 are arranged in a cross shape to ensure the stability of the support for the first positioning plate 4 and the second positioning plate 5. Both ends of the first insertion plate 601 and the second insertion plate 602 are provided with a plurality of insertion blocks 603. The first positioning plate 4 and the second positioning plate 5 are each provided with insertion holes 7 that match the insertion blocks 603 at the ends of the first insertion plate 601 and the second insertion plate 602, so that the first insertion plate 601 and the second positioning plate 5 are connected in a cross shape. The insertion blocks 603 at the bottom of the first and second insertion plates 601 and 602 are both inserted into the insertion holes 7 on the first positioning plate 4, and the insertion blocks 603 at the top of the first and second insertion plates 602 are also inserted into the insertion holes 7 on the first positioning plate 4, thereby ensuring that the first positioning plate 4 and the second positioning plate 5 are fixed at both ends of the connector. In some other embodiments, the connection method of the first positioning plate 4, the second positioning plate 5 and the connector can also adopt other existing connection methods, such as welding, glue connection, etc. The first positioning plate 4, the second positioning plate 5 and the connector can also be integrally molded parts, which will not be elaborated here.

[0042] like Figures 5-9 As shown, in one embodiment, the first positioning disk 4 is detachably connected to the upper surface of the positioning base plate 1 by screws. The positioning base plate 1 has a plurality of first positioning holes 14 for positioning the first positioning disk 4 at equal angles along its outer periphery. The distance between the first positioning hole 14 and the axis of the positioning base plate 1 is less than the radius of the first positioning disk 4. The first positioning disk 4 has first mounting holes 15 that correspond one-to-one with the first positioning holes 14. A first positioning screw 16 passes through each of the first positioning holes 14 and its corresponding first mounting hole 15. The number of the first positioning holes 14 and the distance between the first positioning holes 14 and the axis of the positioning base plate 1 can be adjusted according to actual needs, which will not be elaborated here.

[0043] like Figures 5-7As shown, in one embodiment, the positioning clamp 13 is a right-angled triangular positioning clamp 13, and one right-angled side of the two positioning clamps 13 on the same second positioning member is arranged opposite to each other on both sides of the limiting space, and the other right-angled side of the positioning clamp 13 is fixed to the surface of the fixing member 12, thereby forming a limiting space with a top opening and an overall U-shape between the two positioning clamps 13. When the blade 300 needs to be positioned, the blade 300 is first aligned with the opening at the top of the limiting space, and then the blade 300 is guided into the limiting space by the right-angled sides of the positioning clamps 13 on both sides of the limiting space, and the positioning is completed.

[0044] like Figures 5-7 As shown, in one embodiment, the positioning base plate 1 is provided with four second positioning holes 17 corresponding to each second positioning member. The fixing part is preferably a rectangular plate. The fixing part of each second positioning member is provided with four second mounting holes 18 corresponding to the second positioning holes 17 around its perimeter. A second positioning screw is provided between each second positioning hole 17 and its corresponding second mounting hole 18.

[0045] like Figures 5-7 As shown, in one embodiment, the positioning base plate 1 is provided with a plurality of third positioning holes 19 for positioning the water distributor 100 at equal angles along its axis. The third positioning holes 19 are located between the first positioning hole 14 and the second positioning hole 17. Specifically, the bottom of the hollow tube 200 of the water distributor 100 is provided with a third mounting hole (not shown in the figure) corresponding to the third positioning holes 19 one by one, and a third positioning screw 20 is passed between the third positioning hole 19 and the third mounting hole.

[0046] When positioning the water distributor 100 is required, the water distributor 100 is first matched and connected to the first positioning component. Then, the blades 300 of the water distributor 100 are positioned one by one within the limiting space of the second positioning component, thereby initially positioning the water distributor 100 on the positioning base plate 1. To further improve the positioning accuracy and stability of the water distributor 100 and the positioning base plate, multiple first positioning screws 16 are passed through the first positioning hole 14 and the first mounting hole 15 and tightened to fix the first positioning component on the positioning base plate 1. Then, multiple third positioning screws 20 are passed through the third positioning hole 19 and the third mounting hole and tightened to also fix the water distributor 100 on the positioning base plate 1. On the base plate 1, the positioning accuracy and stability of the water distributor 100 and the positioning base plate 1 are further ensured, thereby ensuring that the water distributor 100 will not deform due to displacement during welding. Before welding, the water distributor 100 and the welding positioning fixture of the water distributor are positioned, and the outer ends of each blade 300 of the water distributor 100 are ensured to extend beyond the positioning base plate 1. Then, the blades 300 are welded to the pipe one by one to ensure the accuracy of welding positioning and effectively eliminate the positioning error caused by welding heat deformation. After the blades 300 of the water distributor 100 are welded, the first positioning screw and the third positioning screw are unscrewed, and the first positioning component and the hollow tube 200 are separated from the positioning base plate.

[0047] like Figure 4 , Figure 7 As shown, in one embodiment, the support frame 2 includes a rectangular support frame 2 disposed at the bottom of the periphery of the positioning base plate 1 and two support beams 3 disposed parallel to each other within the support frame 2. The support frame 2 and the support beams 3 should avoid the areas where the first positioning hole 14, the second positioning hole 17 and the third positioning hole 19 are located.

[0048] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A welding positioning fixture for a water distributor, characterized in that: include: The positioning platform includes a positioning base plate for supporting the water distributor and a support frame disposed at the bottom of the positioning base plate for supporting the positioning base plate and raising the positioning base plate. The first positioning component includes a first positioning disk and a second positioning disk coaxially arranged, and a connecting part vertically fixed between the first positioning disk and the second positioning disk. The first positioning disk is detachably connected to the upper surface of the positioning base plate, and the axis of the first positioning disk passes through the midpoint of the positioning base plate. The diameter of the first positioning disk is smaller than the diameter of the second positioning disk, and a positioning mark is formed at the inner peripheral edge of the second positioning disk. The second positioning component includes a plurality of second positioning members of the same shape that are spaced at equal angles along the outer periphery of the first positioning component. Each second positioning member includes a fixing part fixed to the upper surface of the positioning base plate and two positioning clamps symmetrically arranged on the fixing part. The positioning clamps are vertically arranged on the surface of the fixing part, and a limiting space is formed between the two positioning clamps.

2. The welding positioning fixture for the water distributor according to claim 1, characterized in that: The bottom of the second positioning disk protrudes downward and forms a circular positioning step coaxial with the second positioning disk. The diameter of the positioning step is smaller than the diameter of the second positioning disk, thereby forming an annular clearance groove on the outer periphery of the positioning step. Multiple positioning bosses are arranged circumferentially on the outer periphery of the positioning step.

3. The welding positioning fixture for the water distributor according to claim 2, characterized in that: The positioning mark includes a positioning notch located on the edge of the inner periphery of the second positioning disk, the positioning notch being located on top of one of the positioning bosses.

4. The welding positioning fixture for the water distributor according to claim 3, characterized in that: The connecting component between the first positioning plate and the second positioning plate includes an integrally formed first insertion plate and a second insertion plate. The first insertion plate and the second insertion plate are arranged in a cross shape, and both ends of the first insertion plate and the second insertion plate are provided with a plurality of insertion blocks. The first positioning plate and the second positioning plate are provided with insertion holes that match the insertion blocks at the ends of the first insertion plate and the second insertion plate, so that the insertion blocks located at the bottom of the first insertion plate and the second insertion plate are all inserted into the insertion holes on the first positioning plate, and the insertion blocks located at the top of the first insertion plate and the second insertion plate are all inserted into the insertion holes on the first positioning plate.

5. The welding positioning fixture for the water distributor according to claim 2, characterized in that: The positioning base plate is provided with a plurality of first positioning holes at equal angles along the outer periphery of its axis for positioning the first positioning disk. The distance between the first positioning hole and the axis of the positioning base plate is less than the radius of the first positioning disk. The first positioning disk is formed with first mounting holes corresponding one-to-one with the first positioning holes. A first positioning screw is passed through each of the first positioning holes and its corresponding first mounting holes.

6. The welding positioning fixture for the water distributor according to claim 5, characterized in that: The positioning clamp is a right-angled triangular positioning clamp, and one right-angled side of the two positioning clamps on the same second positioning member is arranged opposite to each other on both sides of the limiting space, and the other right-angled side of the positioning clamp is fixed to the surface of the fixing part.

7. The welding positioning fixture for the water distributor according to claim 6, characterized in that: The positioning base plate is provided with four second positioning holes corresponding to each second positioning member. The fixing part of each second positioning member is provided with four second mounting holes that correspond one-to-one with the second positioning holes. A second positioning screw passes through the second positioning hole and its corresponding second mounting hole.

8. The welding positioning fixture for the water distributor according to claim 7, characterized in that: The positioning base plate is provided with a plurality of third positioning holes for positioning the water distributor at equal angles along its axis, and the third positioning holes are located between the first positioning holes and the second positioning holes.

9. The welding positioning fixture for the water distributor according to claim 1, characterized in that: The support frame includes a rectangular support frame disposed at the bottom of the perimeter of the positioning base plate and two support beams disposed parallel to each other within the support frame.

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