Pipe fitting welding fixture

Abstract

The utility model relates to welding assembly technical field discloses pipe fitting assembly welding frock, including welding positioning main part and holding spare, welding positioning main part is annular with opening, and welding positioning main part is equipped with the clamping part on the both ends of opening outer wall, be equipped with a plurality of through slots on welding positioning main part, all through slots are distributed along the welding positioning main part circumferential and mutually align on the welding positioning main part circumferential, holding spare is suitable for clamping the clamping part on two end portions and forces the both ends of welding positioning main body to be close to each other through two clamping parts, wherein, two to be welded pipe fittings are inserted in the welding positioning main body inside and are fixed coaxially to two to be welded pipe fittings by welding positioning main body, and the welding end of two to be welded pipe fittings is at the through slot. The welding positioning main body does not need to carry out welding positioning frequently and avoids the same pipe fitting combination each welding one butt joint weld or fillet weld needing repeated positioning and adjustment for many times, greatly improves work efficiency and welding quality.

Description

Technical Field

[0001] This utility model relates to the field of welding and assembly technology, specifically to welding fixtures for pipe fitting assembly. Background Technology

[0002] In the field of pipe fitting connections, pipe butt joints and pipe-elbow joints are extremely common operations. For a long time, the industry has widely used triangular wedges for pre-welding positioning. The specific procedure involves first leaving a certain gap at the joint, and then welding the triangular wedge in its upper and lower positions. However, this traditional process has many undeniable drawbacks.

[0003] From the assembly perspective, ensuring straightness on all surfaces during pipe connection is extremely difficult. Due to the inherent limitations of the triangular wedge positioning method, it is challenging to precisely achieve the ideal straightness requirements for pipe fittings in three-dimensional space, which undoubtedly creates potential problems for subsequent welding work.

[0004] During welding, when welding near the triangular wedges, each wedge needs to be ground off. This grinding process generates a large amount of dust, which easily settles on the weld, contaminating it and affecting its quality, thus reducing the reliability and stability of the welded joint. Furthermore, removing the triangular wedges inevitably causes unnecessary damage to the base material, weakening its strength and potentially leading to safety risks during subsequent use.

[0005] Furthermore, this traditional process has significant shortcomings in terms of resource utilization and work efficiency. Frequent welding positioning and subsequent grinding operations waste a large amount of welding material. At the same time, the entire process requires a significant amount of manual labor, increasing labor costs. More importantly, the cumbersome procedures severely delay the welding speed of the workpiece, failing to meet the demands of modern industry for high-efficiency production. In conclusion, developing a new, more efficient pipe fitting joining and welding positioning technology that avoids the aforementioned problems is urgently needed. Utility Model Content

[0006] In view of this, the present invention provides a pipe fitting assembly welding fixture to solve the problem that traditional welding requires the use of triangular wedges for positioning.

[0007] In a first aspect, this utility model provides a pipe fitting assembly welding fixture, wherein the welding positioning body is an annular shape with an opening, and the welding positioning body has clamping parts on the outer walls of both ends of the opening; the welding positioning body is provided with a plurality of through grooves, all of which are distributed along the circumference of the welding positioning body and are aligned with each other in the circumference of the welding positioning body.

[0008] The clamping member is adapted to clamp the clamping portions at both ends and force the two ends of the welding positioning body to move closer to each other through the two clamping portions;

[0009] Two pipe fittings to be welded are inserted inside the welding positioning body and are coaxially fixed by the welding positioning body. The welding ends of the two pipe fittings to be welded are located at the through groove.

[0010] This welding positioning system eliminates the need for frequent welding positioning and avoids the repeated positioning and adjustment required for each butt weld or fillet weld of the same pipe assembly. This prevents the assembly from suffering significant time and effort losses, and the final welding position requires adjustments based on previous deviation data, leading to inefficiency and uncontrollable welding quality. The fixture allows for the simultaneous positioning of key components of an assembly, greatly improving work efficiency and welding quality while significantly reducing welding material waste. Furthermore, the simplified operation process significantly reduces manual labor, saving on labor costs. More importantly, the entire welding process is smoother and more efficient, significantly increasing the welding speed and effectively meeting the urgent needs of modern industry for high-efficiency production.

[0011] In one alternative embodiment, the clamping part is a protrusion provided on the outer wall of both ends of the opening of the welding positioning body.

[0012] In one optional embodiment, the clamping part is formed by bending both ends of the opening of the welding positioning body outward.

[0013] Compared to using additional materials to separately manufacture the clamping parts and assemble them, directly using the welding positioning body opening at both ends for bending reduces the amount of material used and assembly steps, lowers production costs, and also ensures the compactness and integrity of the overall tooling structure.

[0014] In one alternative embodiment, several of the through slots are distributed at equal intervals on the welding positioning body.

[0015] In one optional embodiment, the width of the through groove is greater than the spacing between the welding surfaces of the two pipe fittings to be welded.

[0016] By setting the width of the through groove to be greater than the spacing between the welding surfaces of the two pipe fittings to be welded, it is convenient to weld the welding surfaces of the two pipe fittings through the through groove.

[0017] In one alternative implementation, the inner diameter of the welding positioning body is configured to be smaller than the outer diameter of the pipe fitting to be welded.

[0018] When the pipe fitting to be welded is inserted into the welding positioning body, the interference fit between the two creates a tight contact pressure between the outer wall of the pipe fitting and the inner wall of the welding positioning body. This pressure ensures that the pipe fitting is uniformly and stably constrained in the radial direction, thus achieving a high-precision positioning effect. Compared with traditional clearance fits or other positioning methods, interference fits effectively reduce the wobble and displacement of the pipe fitting during the positioning process, ensuring that the pipe fitting is in an extremely precise coaxial position before welding. This greatly improves the accuracy of straightness adjustment during assembly, laying a solid foundation for subsequent high-quality welding operations.

[0019] In one optional embodiment, the inner wall circumference of the welding positioning body is 10mm-20mm smaller than the outer wall circumference of the pipe fitting to be welded.

[0020] In one alternative embodiment, the welding positioning body is configured to undergo elastic deformation when clamped by the clamping member.

[0021] The welding positioning body is made of a high-quality alloy material with high elasticity, high strength, and good fatigue resistance. This material ensures the overall rigidity of the tooling while giving the welding positioning body excellent elasticity. When the clamping parts at both ends of the opening of the welding positioning body are subjected to external force by the clamping components, the welding positioning body undergoes recoverable elastic deformation and thus conforms to the periphery of the two pipe fittings to be welded. This characteristic allows the welding positioning body to accommodate a wider range of pipe fittings. Furthermore, after welding is completed, the clamping components are released, and the welding positioning body can release the pipe fittings to be welded, facilitating the removal of the welded pipe fittings.

[0022] In one alternative implementation, the clamping element is a bolt clamp.

[0023] In one alternative embodiment, the width of the welding positioning body is less than the overall length of the two pipe fittings to be welded. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is an overall schematic diagram of a pipe fitting assembly and welding fixture according to an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram illustrating the use of a pipe fitting assembly and welding fixture according to an embodiment of the present utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Welding positioning body; 101. Clamping part; 102. Through groove; 2. Supporting component. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the field of pipe fitting connections, pipe butt joints and pipe-elbow joints are extremely common operations. For a long time, the industry has widely used triangular wedges for pre-welding positioning. The specific procedure involves first leaving a certain gap at the joint, and then welding the triangular wedge in its upper and lower positions. However, this traditional process has many undeniable drawbacks.

[0031] From the assembly perspective, ensuring straightness on all surfaces during pipe connection is extremely difficult. Due to the inherent limitations of the triangular wedge positioning method, it is challenging to precisely achieve the ideal straightness requirements for pipe fittings in three-dimensional space, which undoubtedly creates potential problems for subsequent welding work.

[0032] During welding, when welding near the triangular wedges, each wedge needs to be ground off. This grinding process generates a large amount of dust, which easily settles on the weld, contaminating it and affecting its quality, thus reducing the reliability and stability of the welded joint. Furthermore, removing the triangular wedges inevitably causes unnecessary damage to the base material, weakening its strength and potentially leading to safety risks during subsequent use.

[0033] Furthermore, this traditional process has significant shortcomings in terms of resource utilization and work efficiency. Frequent welding positioning and subsequent grinding operations waste a large amount of welding material. At the same time, the entire process requires a significant amount of manual labor, increasing labor costs. More importantly, the cumbersome procedures severely delay the welding speed of the workpiece, failing to meet the demands of modern industry for high-efficiency production.

[0034] Therefore, this embodiment provides a pipe fitting assembly welding fixture, which is described below in conjunction with... Figure 1 The following describes embodiments of the present invention.

[0035] According to an embodiment of this utility model, a pipe fitting assembly welding fixture is provided, such as... Figure 1 As shown, the welding positioning body 1 and the clamping member 2 are included. The welding positioning body 1 is an annular shape with an opening, and clamping parts 101 are provided on the outer walls of both ends of the welding positioning body 1 at the opening. The welding positioning body 1 is provided with a plurality of through grooves 102, all of which are distributed along the circumference of the welding positioning body 1 and are aligned with each other in the circumference of the welding positioning body 1. The clamping member 2 is adapted to clamp the clamping parts 101 on both ends and force the two ends of the welding positioning body 1 to move closer to each other through the two clamping parts 101. Two pipes to be welded are inserted into the welding positioning body 1 and are coaxially fixed by the welding positioning body 1. The welding ends of the two pipes to be welded are located at the through grooves 102.

[0036] The pipe fitting assembly welding fixture mainly consists of two parts: the welding positioning body 1 and the clamping parts 2. For example... Figure 1 As shown, the welding positioning body 1 has an open annular structure, a unique shape design that allows it to flexibly adapt to pipe fittings of different diameters. Clamping portions 101 are specially provided on the outer walls of both ends of the opening of the welding positioning body 1. These clamping portions 101 provide a point of leverage for the subsequent work of the clamping component 2. Several through grooves 102 are distributed on the welding positioning body 1, all of which are neatly arranged along the circumference of the welding positioning body 1 and precisely aligned with each other in the circumferential direction. These through grooves 102 provide the necessary space for the welding operation of the pipe fittings throughout the entire working process of the tooling.

[0037] The clamping component 2, as another part of the tooling, primarily functions to clamp the clamping portions 101 at both ends of the opening of the welding positioning body 1. By applying external force, the clamping component 2 can force the two ends of the welding positioning body 1 closer together through the two clamping portions 101, thereby achieving coaxial fixation of the two pipe fittings to be welded inserted inside the welding positioning body 1. The clamping component 2 clamps the clamping portions 101 at both ends of the opening of the welding positioning body 1, ensuring that the perpendicularity, parallelism, and bevel root assembly gap of the pipe fittings are consistent, facilitating welding operations. In actual operation, the two pipe fittings to be welded are smoothly inserted into the welding positioning body 1. The welding positioning body 1, with its own annular inner wall, can quickly and accurately position the two pipe fittings coaxially, ensuring that the pipe fittings are in the ideal relative position before welding. This greatly improves the accuracy of straightness adjustment during assembly. Compared with the traditional triangular wedge positioning method, it solves the problem that the straightness of pipe butt joints is difficult to adjust in one go on all surfaces, laying a solid foundation for subsequent high-quality welding work.

[0038] The welding ends of the two pipe fittings are located at the through groove 102. This design makes the welding process smoother and more convenient, facilitating tack welding or formal welding operations. During welding, the welding tool can directly perform multiple formal welds within the tooling through groove 102, after which the tooling can be removed to perform welding of other seams. Unlike traditional processes, this tooling eliminates the need for cumbersome disassembly when welding near locating components. This not only avoids dust contamination of the weld caused by removing locating components (such as triangular wedges), effectively ensuring weld quality and improving the reliability and stability of the welded joint, but also avoids damage to the base material, ensuring its strength and reducing safety risks during subsequent use.

[0039] This welding positioning body 1 significantly reduces welding material waste by eliminating the need for frequent welding positioning and subsequent grinding operations. Simultaneously, the simplified operation process greatly reduces manual labor input, saving labor costs. More importantly, the entire welding process is smoother and more efficient, significantly increasing the welding speed of the workpiece and effectively meeting the urgent needs of modern industry for high-efficiency production.

[0040] The number of through grooves 102 on the welding positioning body 1 can be adjusted according to the diameter of the pipe to be welded. When the diameter of the pipe to be welded is large, the number of through grooves 102 can be increased appropriately, and the outer diameters of the two pipes to be welded are equal.

[0041] In one embodiment, the clamping part 101 is formed by bending both ends of the opening of the welding positioning body 1 outward. Compared with using additional materials to separately manufacture the clamping part 101 and assemble it, directly using the bending of both ends of the opening of the welding positioning body 1 reduces the amount of material used and assembly steps, lowers production costs, and also ensures the compactness and integrity of the overall tooling structure.

[0042] In another embodiment, the clamping part 101 may also be a protrusion provided on the outer wall of both ends of the opening of the welding positioning body 1.

[0043] In one embodiment, a plurality of through slots 102 are evenly distributed on the welding positioning body 1. Specifically... Figure 1 In the structure shown, there are three through slots 102.

[0044] In one embodiment, the width of the through groove 102 is greater than the spacing between the welding surfaces of the two pipe fittings to be welded. By setting the width of the through groove 102 to be greater than the spacing between the welding surfaces of the two pipe fittings to be welded, it is convenient to weld the welding surfaces of the two pipe fittings through the through groove 102.

[0045] In one embodiment, the inner diameter of the welding positioning body 1 is configured to be smaller than the outer diameter of the pipe to be welded. When the pipe to be welded is inserted into the welding positioning body 1, due to the interference fit between them, a tight contact pressure is generated between the outer wall of the pipe and the inner wall of the welding positioning body 1. This pressure causes the pipe to be uniformly and stably constrained in the radial direction, thereby achieving a high-precision positioning effect. Compared with traditional clearance fits or other positioning methods, interference fits can effectively reduce the shaking and displacement of the pipe during the positioning process, ensuring that the pipe is in a highly accurate coaxial position before welding, greatly improving the accuracy of straightness adjustment in the assembly process, and laying a solid foundation for subsequent high-quality welding operations.

[0046] In one embodiment, the inner wall circumference of the welding positioning body 1 is 10mm-20mm smaller than the outer wall circumference of the pipe fitting to be welded. For example, the inner wall circumference of the welding positioning body 1 is 11mm, 12mm, or 15mm smaller than the outer wall circumference of the pipe fitting to be welded.

[0047] In one embodiment, the welding positioning body 1 is configured to be clamped by the clamping member 2 and undergo elastic deformation.

[0048] The welding positioning body 1 is made of a high-quality alloy material with high elasticity, high strength, and good fatigue resistance. This type of material ensures the overall rigidity of the tooling while giving the welding positioning body 1 excellent elastic properties. When the clamping member 2 applies external force to the clamping portions 101 at both ends of the opening of the welding positioning body 1, the welding positioning body 1 undergoes recoverable elastic deformation and thus conforms to the periphery of the two pipe fittings to be welded. This characteristic allows the welding positioning body 1 to accommodate a wider range of pipe fittings. Furthermore, after welding is completed, the clamping member 2 is released, allowing the welding positioning body 1 to release the pipe fittings to be welded, facilitating the removal of the welded pipe fittings.

[0049] In one embodiment, such as Figure 1 As shown, clamping component 2 uses a heavy-duty clamp.

[0050] In one embodiment, the width of the welding positioning body 1 is less than the overall length of the two pipe fittings to be welded, so that the ends of the two pipe fittings that do not need to be welded can extend out of the outside of the welding positioning body 1, thereby facilitating the placement and position adjustment of the pipe fittings to be welded.

[0051] The pipe fitting assembly and welding fixture provided in this embodiment works as follows:

[0052] First, insert one end of each of the two pipe fittings to be welded smoothly into the welding positioning body 1, ensuring the welding ends of the fittings are accurately aligned with the through groove 102. During this process, utilize the flexibility of the annular structure of the welding positioning body 1 to fine-tune the position of the fittings, initially placing the two fittings in a coaxial state. Then, install the clamping member 2 on the clamping parts 101 at both ends of the opening of the welding positioning body 1. The clamping member 2 applies external force to the clamping parts 101, causing the two ends of the welding positioning body 1 to move closer together, thus tightly holding the two inserted pipe fittings and achieving precise coaxial fixation. During the clamping process, measuring tools, such as a laser alignment instrument, can be used to monitor the coaxiality of the fittings in real time to ensure that the positioning accuracy meets the welding process requirements. Then, start the welding equipment. The welding equipment can directly perform multi-segment formal weld welding within the through groove 102 of the tooling, and then remove the tooling to perform welding of other welds. This method is also applicable to the simultaneous assembly and tack welding or welding of multiple continuous pipe butt joint bevels.

[0053] like Figure 2 As shown, the pipe assembly and welding fixture provided in this embodiment can fix multiple pipes at once and then perform unified welding.

[0054] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A pipe fitting assembly and welding fixture, characterized in that, include: The welding positioning body (1) is an annular shape with an opening, and the welding positioning body (1) has clamping parts (101) on the outer walls of both ends of the opening; the welding positioning body (1) has a plurality of through grooves (102), all of the through grooves (102) are distributed around the welding positioning body (1) and are aligned with each other around the welding positioning body (1); The clamping member (2) is adapted to clamp the clamping parts (101) on both ends and force the two ends of the welding positioning body (1) to move closer to each other through the two clamping parts (101); Two pipe fittings to be welded are inserted inside the welding positioning body (1) and are coaxially fixed by the welding positioning body (1). The welding ends of the two pipe fittings to be welded are located at the through groove (102).

2. The pipe fitting assembly and welding fixture according to claim 1, characterized in that, The clamping part (101) is a protrusion provided on the outer wall of both ends of the opening of the welding positioning body (1).

3. The pipe fitting assembly and welding fixture according to claim 1, characterized in that, The clamping part (101) is formed by bending the two ends of the welding positioning body (1) outward at the opening.

4. The pipe fitting assembly and welding fixture according to any one of claims 1-3, characterized in that, Several of the through grooves (102) are distributed at equal intervals on the welding positioning body (1).

5. The pipe fitting assembly and welding fixture according to claim 4, characterized in that, The width of the through groove (102) is greater than the spacing between the welding surfaces of the two pipe fittings to be welded.

6. The pipe fitting assembly and welding fixture according to claim 4, characterized in that, The inner diameter of the welding positioning body (1) is configured to be smaller than the outer diameter of the pipe to be welded.

7. The pipe fitting assembly and welding fixture according to claim 6, characterized in that, The inner circumference of the welding positioning body (1) is 10mm-20mm smaller than the outer circumference of the pipe to be welded.

8. The pipe fitting assembly and welding fixture according to claim 6, characterized in that, The welding positioning body (1) is configured to be elastically deformed by being clamped by the clamping member (2).

9. The pipe fitting assembly and welding fixture according to any one of claims 1-3, characterized in that, The clamping component (2) is a high-strength clamp.

10. The pipe fitting assembly and welding fixture according to any one of claims 1-3, characterized in that, The width of the welding positioning body (1) is less than the overall length of the two pipe fittings to be welded.

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