Bent pipe and flange welding rapid assembly tool

Abstract

The utility model relates to the technical field of bent pipe welding, and discloses a bent pipe and flange welding rapid assembly tool which comprises a supporting assembly used for supporting a bent pipe body and a vertical plate assembly used for fixing a flange. The vertical plate assemblies are symmetrically distributed on the left and right sides of the supporting assembly. The supporting assembly comprises a bent pipe containing platform, the bent pipe containing platform is of an arc-shaped structure bent inwards, a bent pipe positioning pin and a bent pipe positioning hole allowing the bent pipe positioning pin to penetrate through are formed in the bent pipe containing platform, the bent pipe positioning hole is located in the outer side of the bent pipe containing platform, and the bent pipe positioning pin penetrates through the bent pipe positioning hole to abut against the outer side of a bent pipe body. The vertical plate assembly comprises a vertical plate, a plurality of cushion blocks used for positioning a flange are arranged on the vertical plate, and a flange pressing plate used for pressing the flange is arranged on the right sides of the cushion blocks. The right surface of the vertical plate contacts with the left end face of the flange, and the left surface of the flange pressing plate contacts with two sides of the right end face of the flange. The assembling device can solve the problems that batch assembling of flanges and elbow bodies is difficult, and the assembling speed is low.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending welding technology, specifically to a quick assembly tooling for welding pipe bends and flanges. Background Technology

[0002] In modern industrial piping systems, flange connection is a common and reliable connection method, so it is often necessary to weld flanges at both ends of the pipe body to achieve the connection between pipe systems.

[0003] However, when welding flanges to bends in pipe bodies, ensuring the alignment of the inner bores of both flanges during the welding process is a challenging task due to the unique geometry and structural limitations of the bend. The bending of the pipe body makes conventional positioning and welding operations difficult, placing extremely high demands on the welding process. This requires not only highly skilled welders but also meticulous and focused work attitudes. This makes the welding process between bends and flanges quite complex and time-consuming, resulting in low production efficiency and difficulty in quickly meeting product delivery requirements. Utility Model Content

[0004] The present invention aims to provide a quick assembly tooling for welding bends and flanges, so as to overcome the problems of difficulty and slow assembly speed of batch flange and bend pipe body assembly.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a quick assembly tool for welding bent pipes and flanges, comprising a support assembly for supporting the bent pipe body and a vertical plate assembly for fixing the flange; the vertical plate assembly is symmetrically distributed on the left and right sides of the support assembly; the support assembly includes a bent pipe placement platform for fixing the bent pipe body, the bent pipe placement platform being an inwardly curved arc structure, the bent pipe placement platform being provided with a bent pipe positioning pin and a bent pipe positioning hole for the bent pipe positioning pin to pass through, the bent pipe positioning hole being located on the outside of the bent pipe placement platform, the bent pipe positioning pin passing through the bent pipe positioning hole and being tightly fitted to the outside of the bent pipe body; the vertical plate assembly includes a vertical plate, the vertical plate being provided with a plurality of pads for positioning the flange, the right side of the pads being provided with a flange pressure plate for pressing the flange; the right surface of the vertical plate is in contact with the left end face of the flange, and the left surface of the flange pressure plate is in contact with both sides of the right end face of the flange.

[0006] The principle of this solution is as follows: In practical application, the flange pressure plate on the right side of the pad fixes the flange between the vertical plate and the flange pressure plate. The bent pipe body is placed horizontally on the bent pipe placement platform, and the bent pipe positioning pin is inserted into the bent pipe positioning hole to ensure that the bent pipe body is close to the bent pipe positioning pin to complete the positioning of the bent pipe body, thereby completing the precise positioning of the bent pipe body. Finally, the positioned bent pipe body and the flange are welded together by spot welding, thus realizing the rapid assembly of the bent pipe and the flange.

[0007] The advantages of this solution are: (1) It overcomes the technical prejudice that traditional flange and bend pipe body assembly is difficult and slow. This solution can achieve the alignment of flange and bend pipe body through flange pressure plate, gasket, bend pipe positioning pin and bend pipe placement platform, thereby achieving rapid assembly of bend pipe body and flange.

[0008] (2) This solution reduces the positioning and fixing time of the pipe body and flange by designing a special tooling for quick assembly of pipe bends and flanges, making the whole assembly process faster and more efficient.

[0009] (3) This solution uses the same special tooling for assembly, which can ensure that different batches of products have highly consistent quality and specifications.

[0010] (4) This solution has a simple structure and is easy to operate, reducing complex adjustment steps, thereby reducing the workload of operators and improving work efficiency.

[0011] (5) The pad is used to assist in pressing and positioning the flange so that the flange pressure plate and the flange can be on the same plane.

[0012] (6) The arc-shaped structure can better fit the natural curve of the bent pipe body, provide a support surface that better matches the shape of the workpiece, and ensure that the bent pipe remains stable during processing.

[0013] Preferably, as an improvement, the bending angle β of the arc-shaped structure is 70 degrees.

[0014] Beneficial effects: It can better fit the bent pipe body with a bending angle of 70 degrees, provide a support surface that better conforms to the shape of the workpiece, and ensure that the bent pipe body remains stable during processing.

[0015] Preferably, as an improvement, the pad is provided with a bolt and a second threaded hole for the bolt to pass through on the side near the center line of the upright plate. The bolt passes through the second threaded hole to fix the flange pressure plate on the right side of the pad and press the flange.

[0016] Beneficial effects: The bolted connection ensures a tight fit between the flange plate and the gasket, enhancing their stability. It also facilitates the adjustment of the flange plate, allowing it to tightly press the flange and effectively prevent displacement or loosening of the flange during operation.

[0017] Preferably, as an improvement, the support assembly further includes a tooling base and a support column, wherein the tooling base is connected to the pipe bending platform via the support column; the pipe bending platform is located above the tooling base.

[0018] Beneficial effects: The support columns provide stable support, ensuring that the curved pipe placement platform remains level and stable during use, reducing swaying or tilting caused by external forces.

[0019] Preferably, as an improvement: the tooling base is provided with a plurality of first threaded holes and grooves on the left and right sides for fixing the upright plate assembly; the grooves are located on the center line of the tooling base, and the first threaded holes are symmetrically distributed at the front and rear ends of the grooves.

[0020] Beneficial effects: The design of the first threaded hole and groove provides multiple connection points, reducing the problem of offset or loosening of the upright plate assembly caused by uneven force at a single point, and improving the stability and rigidity of the overall tooling; at the same time, it simplifies the installation operation and reduces adjustment time.

[0021] Preferably, as an improvement, the groove is a U-shaped structure with a cross-section comprising a semicircle and a rectangle, the semicircle being located on the right side of the rectangle.

[0022] Beneficial effects: The U-shaped structure provides a clear guide path, allowing the upright panel assembly to be precisely aligned and installed along the groove; and it provides intuitive reference points, reducing adjustment and calibration time and making the installation process simpler and faster.

[0023] Preferably, as an improvement, the upright plate assembly further includes a stiffening plate and a base plate, the stiffening plate being located on the left side of the upright plate, and the base plate being located below the stiffening plate and the upright plate, and above the tooling base.

[0024] Beneficial effects: The stiffening plates increase the thickness of the uprights, effectively improving the bending strength and rigidity of the entire upright assembly and preventing deformation of the uprights under stress; the base plate provides a solid foundation support for the entire upright assembly, ensuring its stability during use and preventing it from shaking or tipping over.

[0025] Preferably, as an improvement, the base plate is provided with a plurality of fixing holes and bosses for matching with the tooling base, the bosses are located on the center line of the base plate, and the fixing holes are symmetrically distributed at the front and rear ends of the bosses.

[0026] Beneficial effects: The number of fixing holes and bosses increases the number of connection points, improving the overall stability and rigidity of the tooling.

[0027] Preferably, as an improvement, the upright plate assembly further includes a flange positioning pin, and the upright plate is provided with a positioning pin hole for the flange positioning pin to pass through. The flange positioning pin passes through the positioning pin hole into the central through hole of the flange to fix the flange on the upright plate.

[0028] Beneficial effects: Flange locating pins can effectively restrict the movement of the flange, ensuring that it does not shift laterally or longitudinally during operation.

[0029] Preferably, as an improvement, the left and right sides of the pipe bending platform are provided with auxiliary grooves for auxiliary positioning.

[0030] Beneficial effects: The auxiliary slot provides an intuitive reference for installation, reducing adjustment and calibration time and making the installation process simpler and faster.

[0031] The beneficial effects of this solution are: (1) This solution ensures that the flange can be quickly and accurately aligned during installation by designing the upright plate, pad block, flange pressure plate and flange positioning pin; the setting of its bend support platform, bend positioning pin and auxiliary groove ensures that the bend pipe body can be quickly and accurately aligned during installation, reducing the time of repeated correction and improving work efficiency.

[0032] (2) The tooling in this scheme greatly reduces the difficulty of assembling the pipe body and flange, and improves the accuracy and efficiency of the assembly.

[0033] (3) Special tooling provides a precise positioning reference, ensuring accurate alignment between the bend pipe body and the flange, and assembling it at the same time, ensuring that the quality of different batches of products (i.e. bend pipe flange assembly) remains consistent, thus improving production quality.

[0034] (4) This solution has a simple structure and is easy to operate through the setting of support components and upright components, which makes more effective use of equipment and human resources and reduces unnecessary waste. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of a quick assembly tooling for welding bends and flanges provided in an embodiment of this utility model.

[0036] Figure 2 This is a schematic diagram of the structure of the bend placement platform in a quick assembly tooling for welding bends and flanges provided in an embodiment of this utility model.

[0037] Figure 3 This is a front view of the support component in a quick assembly tooling for welding bends and flanges provided in an embodiment of this utility model.

[0038] Figure 4A top view of the support component in a quick assembly tooling for welding bends and flanges provided in this embodiment of the utility model. Figure 1 .

[0039] Figure 5 A schematic diagram of the structure of the upright plate assembly in a quick assembly tooling for welding bends and flanges provided in this embodiment of the utility model. Figure 1 .

[0040] Figure 6 A schematic diagram of the structure of the upright plate assembly in a quick assembly tooling for welding bends and flanges provided in this embodiment of the utility model. Figure 2 .

[0041] Figure 7 This is a bottom view of the upright plate assembly in a quick assembly tooling for welding bends and flanges provided in an embodiment of the present utility model.

[0042] Figure 8 This is a schematic diagram of the structure of a bend-flange assembly in a quick assembly tooling for welding bends and flanges provided in an embodiment of this utility model.

[0043] Figure 9 This is a top view of a quick assembly tooling for welding bends and flanges provided in an embodiment of the present invention.

[0044] Figure 10 A top view of the support component in a quick assembly tooling for welding bends and flanges provided in this embodiment of the utility model. Figure 2 . Detailed Implementation

[0045] The following detailed description illustrates the specific implementation method:

[0046] The reference numerals in the accompanying drawings include: tooling base 1, support column 2, bend placement platform 3, bend positioning hole 4, first threaded hole 5, groove 6, pad 7, second threaded hole 8, upright plate 9, stiffening plate 10, base plate 11, positioning pin hole 12, fixing hole 13, boss 14, flange pressure plate 15, bend positioning pin 16, flange positioning pin 17, bolt 18, bend body 19, flange 20, auxiliary groove 21.

[0047] Example 1:

[0048] The implementation examples are basically as follows Figure 1 As shown: A quick assembly tooling for welding bends and flanges includes a support assembly for supporting the bend body 19 and a vertical plate assembly for fixing the flange 20.

[0049] The support assembly includes a fixture base 1, a support column 2, and a pipe bending platform 3. The fixture base 1 and the pipe bending platform 3 are connected by the support column 2, with the pipe bending platform 3 mounted above the fixture base 1. Specifically, both the fixture base 1 and the pipe bending platform 3 are inwardly curved arc structures. The bending angle of the arc structure can be designed according to the structure of the pipe body 19. The arc structure can better conform to the natural curve of the pipe body 19, providing a support surface that better matches the workpiece shape. This ensures the stability of the pipe during processing while reducing tooling material feeding and facilitating welding operations. The pipe bending platform 3 supports and places the pipe body 19, providing accurate support points for the pipe body 19, helping to precisely position the pipe body 19 and ensuring accuracy and consistency during processing. The support column 2 provides robust vertical support, ensuring that the pipe bending platform 3 can be stably maintained at the required height and position, reducing swaying or tilting caused by external forces, thereby improving the overall stability of the fixture. In this embodiment, the bending angle of the tooling base 1 and the bending pipe placement platform 3 is 70 degrees. Specifically, as shown... Figure 2 As shown, the bending angle β of the bending pipe placement platform 3 is 70 degrees, the inner diameter of the bending part is 326.09 mm, the inner diameter of the bending part is 484.93 mm, and the length of the straight section on the left and right sides of the bending pipe body 19 is 130.20 mm.

[0050] Specifically, such as Figure 3 As shown, the tooling base 1 and the pipe bending platform 3 are connected by a support column 2, and the pipe bending platform 3 is installed above the tooling base 1. Figure 4 As shown, the pipe bending platform 3 is equipped with pipe bending positioning pins 16 and pipe bending positioning holes 4 through which the pipe bending positioning pins 16 pass. The pipe bending positioning holes 4 are located on one side of the pipe bending platform 3. Specifically, the pipe bending positioning holes 4 are located on the outer side of the pipe bending platform 3, that is, on the side with the longest arc length in the pipe bending platform 3. The pipe bending positioning holes 4 provide a fixed reference point, which can accurately install or adjust the position of the pipe bending body 19. The pipe bending positioning pins 16 are inserted into the pipe bending positioning holes 4, close to the outer side of the pipe bending body 19, thereby completing the precise positioning of the pipe bending body 19, so that the pipe bending body 19 will not move outward during processing, affecting the processing quality. The number of pipe bending positioning holes 4 and pipe bending positioning pins 16 can be adjusted according to the specific situation of the pipe bending body 19. In this embodiment, the number of pipe bending positioning holes 4 and pipe bending positioning pins 16 are both 2.

[0051] The tooling base 1 has several first threaded holes 5 and grooves 6 on both its left and right sides. These first threaded holes 5 and grooves 6 are used to fix the upright plate assembly. The grooves 6 are located on the center line of the tooling base 1, and the first threaded holes 5 are symmetrically distributed on both sides of the grooves 6 along the center line of the tooling base 1. The grooves 6 have a U-shaped structure, with a cross-section including a semi-circle and a rectangle. The semi-circle is located on the right side of the rectangle. The U-shaped structure provides a clear guide path, allowing the upright plate assembly to be precisely aligned and installed along the grooves 6, making the installation process simple and quick. Specifically, in this embodiment, there are four first threaded holes 5 (two on each side) and two grooves 6 (one on each side), with a depth of 8mm.

[0052] like Figure 5 As shown, the upright plate assembly includes an upright plate 9, a stiffening rib 10, a base plate 11, and a pad block 7. The upright plate 9 and the stiffening rib 10 are fixedly welded to the top of the base plate 11. The stiffening rib 10 is welded to the left side of the upright plate 9. The stiffening rib 10 increases the thickness of the upright plate 9, effectively improving the bending strength and rigidity of the entire upright plate assembly and preventing deformation of the upright plate 9 under stress. Figure 6 , Figure 7 As shown, on the side of the upright plate 9 away from the base plate 11, a pad 7, a second threaded hole 8, and a locating pin hole 12 are arranged sequentially along the horizontal axis. The locating pin hole 12 is located on the center line of the upright plate 9 and is used to determine the position of the flange center through hole. The flange locating pin 17 passes through the locating pin hole 12 and enters the flange center through hole to fix the flange 20 to the upright plate 9. Pads 7 are symmetrically welded to both sides of the locating pin hole 12 along the center line. Pads 7 are used to assist in tightening and positioning the flange 20. The second threaded hole 8 is located between the pad 7 and the locating pin hole 12, closer to the pad 7. Bolts 18 pass through the second threaded hole 8 to fix the flange pressure plate 15 to the right side of the pad 7 and fix the flange 20 between the flange pressure plate 15 and the upright plate 9. The base plate 11 is provided with several fixing holes 13 and bosses 14. The bosses 14 are located on the center line of the base plate 11, and the fixing holes 13 are located on both sides of the bosses 14 and are symmetrically distributed along the center line. By using the fixing hole 13 and the boss 14 in conjunction with the first threaded hole 5 and the groove 6 on the tooling base 1, the upright plate assembly can be vertically installed on the tooling base 1, completing the assembly of the upright plate assembly and the support assembly, thereby completing the quick assembly tooling for welding the bent pipe and flange 20.

[0053] The specific implementation process is as follows:

[0054] Before starting work: First, weld the tooling base 1 to the support column 2 firmly, and then weld it to the bending pipe placement platform 3 to form a support assembly. Then, weld the upright plate 9, stiffening plate 10, and base plate 11 together. Next, weld the pads 7 at the corresponding positions on the upright plate 9 to form an upright plate assembly. Then, the upright plate assembly and the support assembly are positioned and aligned using the boss 14 on the base plate 11 and the groove 6 on the tooling base 1. The screws, through the fixing holes 13 on the base plate 11 and the first threaded hole 5 on the tooling base 1, engage with the nuts to fix the two upright plate assemblies to the left and right sides of the support assembly, thus forming a complete tooling.

[0055] At work: such as Figure 8 , Figure 9 As shown, the flange 20 is fixed between the vertical plate 9 and the flange 20 by passing the flange locating pin 17 through the locating pin hole 12 on the vertical plate 9 and connecting it to the flange center through hole, and by passing the flange pressure plate 15 and the second threaded hole 8 through the bolt 18. The left end face of the flange 20 contacts the right surface of the vertical plate 9, and the left surface of the flange pressure plate 15 contacts both sides of the right end face of the flange 20. Next, the bent pipe body 19 is placed horizontally on the bent pipe placement platform 3, and the bent pipe locating pin 16 is inserted into the bent pipe locating hole 4, ensuring that the outer side of the bent pipe body 19 is close to the bent pipe locating pin 16 to complete the positioning of the bent pipe body 19, thus achieving precise positioning of the bent pipe body 19. The two ends of the bent pipe body 19 are then aligned with the left and right flanges 20, thus completing the precise positioning of the bent pipe body 19 and the flange 20. Finally, the positioned bent pipe body 19 and flange 20 are spot welded together, thus achieving rapid assembly of the bent pipe and flange 20.

[0056] (1) The tooling used in this solution overcomes the technical bias of traditional assembly of flange 20 and bend pipe body 19 being difficult and slow. Through the upright plate assembly and support assembly, alignment between flange 20 and bend pipe body 19 can be achieved, thus enabling rapid assembly of bend pipe body 19 and flange 20. Specifically, the upright plate 9, gasket 7, flange pressure plate 15, and flange positioning pin 17 ensure that flange 20 can be quickly and accurately aligned during installation; the bend pipe support platform 3 and bend pipe positioning pin 16 ensure that bend pipe body 19 can be quickly and accurately aligned during installation, greatly reducing the difficulty of assembling bend pipe body 19 and flange 20, accelerating the accuracy of assembly, reducing the time spent on repeated corrections, and thus improving work efficiency.

[0057] (2) This solution can ensure that the quality of different batches of products (i.e., bent flange assemblies) remains consistent, thus improving production quality.

[0058] (3) This solution has a simple structure and is easy to operate, reducing complex adjustment steps, making more effective use of equipment and human resources, and reducing unnecessary waste.

[0059] Example 2:

[0060] The difference between this embodiment and embodiment one is that the left and right sides of the pipe bending platform 3 are provided with auxiliary grooves 21 for auxiliary positioning.

[0061] Specifically, such as Figure 10 As shown, auxiliary slots 21 for auxiliary positioning are configured on the left and right sides of the pipe bending platform 3. That is, auxiliary slots 21 are configured on both sides of the pipe bending platform 3 near the upright plate assembly, and are located on both sides of the pipe bending positioning hole 4. Movable blocks for clamping the pipe bending body 19 are installed at the front and rear ends of the auxiliary slots 21. Screws are installed on the outside of the movable blocks to adjust the movement of the movable blocks, which can limit the movement of the pipe bending body 19 in a specific direction, effectively prevent lateral displacement that may occur during installation, and enhance the stability of the pipe bending body 19.

[0062] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A bend and flange welding quick assembly tool, characterized in that: The support assembly comprises a support assembly for supporting the elbow pipe body and a vertical plate assembly for fixing the flange; the vertical plate assembly is symmetrically distributed on the left and right sides of the support assembly; the support assembly comprises an elbow placing platform for fixing the elbow pipe body, the elbow placing platform is an inwardly curved arc structure, the elbow placing platform is provided with an elbow positioning pin and an elbow positioning hole through which the elbow positioning pin passes, the elbow positioning hole is located on the outer side of the elbow placing platform, and the elbow positioning pin is in abutting contact with the outer side of the elbow pipe body through the elbow positioning hole; the vertical plate assembly comprises a vertical plate, the vertical plate is provided with a plurality of pads for positioning the flange, the right side of the pad is provided with a flange pressing plate for pressing the flange; the right surface of the vertical plate is in contact with the left end surface of the flange, and the left surface of the flange pressing plate is in contact with both sides of the right end surface of the flange.

2. The bend and flange welding and quick assembly tooling of claim 1, wherein: The bending angle β of the arc structure is 70 degrees.

3. The bend and flange welding and rapid assembly fixture of claim 1, wherein: The side of the pad close to the center line of the vertical plate is provided with a bolt and a second threaded hole through which the bolt passes, and the bolt passes through the second threaded hole to fix the flange pressing plate on the right side of the pad and press the flange.

4. The bend and flange welding and rapid assembly fixture of claim 1, wherein: The support assembly further comprises a tool base and a support column, and the tool base and the elbow placing platform are connected through the support column; the elbow placing platform is located above the tool base.

5. The bend and flange welding and rapid assembly fixture of claim 4, wherein: The left and right sides of the tool base are provided with a plurality of first threaded holes and grooves for fixing the vertical plate assembly; the groove is located on the center line of the tool base, and the first threaded holes are symmetrically distributed on the front and rear ends of the groove.

6. The bend and flange welding and rapid assembly fixture of claim 5, wherein: The groove is a U-shaped structure, and its cross section comprises a semicircle and a rectangle, and the semicircle is located on the right side of the rectangle.

7. The bend and flange welding quick assembly fixture of claim 6, wherein: The vertical plate assembly further comprises a rib plate and a bottom plate, the rib plate is located on the left side of the vertical plate, and the bottom plate is located below the rib plate and the vertical plate and above the tool base.

8. The bend and flange welding rapid assembly fixture of claim 7, wherein: The bottom plate is provided with a plurality of fixing holes and bosses for matching with the tool base, the boss is located on the center line of the bottom plate, and the fixing holes are symmetrically distributed on the front and rear ends of the boss.

9. The bend and flange welding and rapid assembly fixture of claim 1, wherein: The vertical plate assembly further comprises a flange positioning pin, the vertical plate is provided with a positioning pin hole through which the flange positioning pin passes, and the flange positioning pin passes through the center through hole of the flange through the positioning pin hole to fix the flange on the vertical plate.

10. The bend and flange welding and rapid assembly fixture of claim 1, wherein: The left and right sides of the elbow placing platform are provided with auxiliary grooves for auxiliary positioning.

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