A flange welding positioner device

Abstract

This utility model discloses a flange welding positioner device, belonging to the technical field of flange welding auxiliary equipment, used for rapid and precise alignment welding of pipes and flanges. The device includes a connecting rod and baffles fixed at both ends. The inner diameter of the baffles matches the outer diameter of the pipe to be welded, and the two baffles are kept parallel and positioned by the connecting rod. Multiple sets of through holes are opened on the baffles, corresponding to the bolt holes of the flange. In use, the positioner is fitted onto the pipe, leaving a flange installation section. The flange is then bolted through the through holes and securely connected to the baffles, eliminating radial sliding and circumferential rotation of the flange during welding. After positioning, spot welding can be performed directly. The device can be reused after removal. This utility model achieves automatic coaxial positioning of the flange and pipe through a mechanical limiting structure, solving the problem of manual alignment deviation; it has the advantages of simple structure and reusability.

Description

Technical Field

[0001] This utility model belongs to the technical field of flange welding auxiliary equipment, and specifically relates to a flange welding positioner device. Background Technology

[0002] In industrial piping systems, welding pipes to flanges is a crucial process for connecting pipelines and ensuring system sealing and pressure resistance. Pipelines are typically used to transport liquids, gases, or particulate media, such as in the petroleum, chemical, and water conservancy industries; flanges, as connectors, enable detachable connections between pipes and support valves, instruments, and other accessories. However, during welding, if the pipe and flange are not precisely aligned or securely fixed, uneven welds, sealing failures, and even media leaks can easily occur, affecting the safe operation and long-term reliability of the entire system. Therefore, efficient and precise welding positioning methods are essential for improving production efficiency and reducing rework rates.

[0003] In existing technologies, welding pipes to flanges often relies on manual positioning. During operation, workers must first place the flange on the pipe, visually adjust its position based on experience, and then use temporary clamps or welding clips to fix the flange before spot welding. This method is prone to radial slippage or circumferential rotation during welding, leading to weld misalignment or uneven gaps, affecting welding quality; moreover, repeated positioning adjustments consume a lot of time and are inefficient. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a flange welding positioner device to solve the technical problems of manual positioning and welding of pipe flanges in the prior art, which are prone to radial sliding or circumferential rotation, resulting in low welding efficiency and difficult operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model includes a connecting rod and two baffles. The inner diameter of each baffle is matched with the outer diameter of the pipe to be welded. There is at least one connecting rod, which is fixedly connected to the two baffles respectively, so that the positions of the two baffles are parallel to each other. At least one baffle has at least one through hole for fixedly engaging with a hole on a flange.

[0007] Optionally, at least one baffle has an extension section extending downward at both ends. The extension section further includes a spring and a locking block. A groove is formed inward on the opposite face of the extension section on the same baffle. The locking block is slidably disposed in the groove. The spring is supported between the groove and the locking block. The locking block portion protrudes from the groove opening. The protruding portion of the locking block is used to abut against the outside of the pipe to be welded.

[0008] Optionally, a locking bolt is threaded onto the opposite side of the extension section on the same baffle, the locking bolt passing through the extension section and extending into the sink.

[0009] Optionally, at least one of the baffles has an inwardly recessed groove on its outer side, and a magnet is embedded in the groove, with the magnet protruding from the side of the baffle.

[0010] Optionally, at least one of the baffles has at least one cylindrical protrusion on its outer side, the protrusion engaging with a flange hole.

[0011] Optionally, the lower section of the exposed portion of the card block is designed as an inclined surface to facilitate the sliding of the pipe to be welded.

[0012] Optionally, the upper section of the exposed portion of the card block is designed as an arc surface that matches the curvature of the side of the pipe to be welded.

[0013] Optionally, the upper part of the exposed portion of the card block is wrapped with a layer of anti-slip rubber.

[0014] The beneficial effects of this utility model are as follows: by fixing two baffles in parallel and by quickly fitting the two baffles onto the outside of the pipe, the flange to be welded can be blocked, the welding position of the flange to be welded can be determined, and by fixing with bolts, the flange will not easily slide or rotate radially in the pipe, which facilitates the fast and accurate welding of the flange.

[0015] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is a schematic diagram of the overall positioning device of the utility model.

[0018] Figure 2 This is a schematic diagram of the operation of the positioner device of the utility model;

[0019] Figure 3 A cross-sectional view of the baffle of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point A;

[0021] The following are marked in the attached diagram: 1. Connecting rod; 2. Baffle; 21. Extension section; 211. Slot; 22. Spring; 23. Locking block; 231. Anti-slip rubber; 24. Locking bolt; 25. Protrusion; 26. Through hole; 3. Magnet. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0023] Please refer to the figures. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0024] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0025] This utility model provides a flange welding positioner device, such as Figures 1-4 As shown, it includes a connecting rod body 1 and two baffle plates 2. The inner diameter of each baffle plate 2 is matched with the outer diameter of the pipe to be welded. There are three connecting rod bodies 1, which are fixedly connected to the two baffle plates 2 respectively. The three connecting rod bodies 1 are arranged parallel to each other, so that the positions of the two baffle plates 2 are parallel to each other. The two baffle plates 2 are provided with multiple through holes 26 for fixed matching with the holes on the flange.

[0026] The method of using this utility model is as follows: A locator device of suitable size to the pipe is placed over the pipe, leaving enough space on the pipe edge outside the position of the baffle 2 for inserting a flange. The flange is then placed on the pipe, and bolts are used to pass through the through hole 26 to secure the flange to the locator. Spot welding can then be performed on the pipe and flange. After welding, the locator is disassembled, and the pipe flange welding is complete. This locator can be reused. This locator device, fixed in parallel by two baffles 2, and quickly fitted onto the outside of the pipe, can block the flange to be welded, determining the welding position of the flange. Furthermore, the bolt fixation prevents the flange from easily sliding or rotating radially within the pipe, facilitating fast and precise welding of the flange.

[0027] In a further embodiment, one baffle plate 2 has four through holes 26, and the other baffle plate 2 has two through holes 26. The baffle plate 2 with the two through holes 26 has downward-extending extension sections 21 at both ends. Each extension section 21 includes a spring 22 and a locking block 23. A recessed groove 211 is formed inwards on the opposite surface of the extension section 21 on the same baffle plate 2. The locking block 23 is slidably disposed within the recessed groove 211. The spring 22 is supported between the recessed groove 211 and the locking block 23. A portion of the locking block 23 protrudes from the opening of the recessed groove 211. The protruding portion of the locking block 23 is used to abut against the outside of the pipe to be welded. The extension section 21 is threaded with a locking bolt 24 on the opposite side. The locking bolt 24 passes through the extension section 21 and extends into the groove 211. The outer side of the baffle 2 has an inwardly recessed groove, in which a magnet 3 is embedded. The magnet 3 protrudes from the side of the baffle 2 and is evenly distributed on the outer side of the baffle 2. The outer side of the baffle 2 has two cylindrical protrusions 25 that mate with the flange holes. The lower part of the exposed portion of the locking block 23 is designed as an inclined surface to facilitate the sliding of the pipe to be welded. The upper part of the exposed portion of the locking block 23 is designed as an arc surface that matches the curvature of the side of the pipe to be welded and is covered with a layer of anti-slip rubber 231.

[0028] In this design, an extension section 21 is provided on one of the baffles 2. The extension section 21 is equipped with a clamping block 23 for further clamping the outside of the pipe. The lower part of the clamping block 23 is set as an inclined surface and the upper end is set as an arc surface. When the positioner is placed on the pipe, force is applied directly to the pipe to clamp the baffle 2 into the pipe. By setting the elastically movable clamping block 23, the positioner can be further limited to prevent the positioner from rotating or even slipping. The locking bolt 24 is further provided. After the positioner is clamped, the locking bolt 24 is tightened. The locking bolt 24 presses against the clamping block 23, so that the two clamping blocks 23 further clamp the pipe. And the anti-slip rubber 231 can further fix the positioner, providing more stable support for the subsequent welding of the flange. The magnet 3 and the protrusion 25 can replace the bolt fixing method of the through hole 26, directly and quickly connecting the flange to the baffle 2, improving the operation efficiency of flange positioning.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A flange welding positioner device, characterized in that: The system includes a connecting rod (1) and two baffles (2), the inner diameter of which matches the outer diameter of the pipe to be welded. The connecting rod (1) is at least one in number and is fixedly connected to each of the two baffles (2), making the two baffles (2) parallel to each other. At least one baffle (2) has at least one through hole (26) for fixed engagement with a hole on a flange. Both ends of at least one baffle (2) extend downwards with extension sections (21), each extension section (21) including a spring (22) and a locking block (23). The opposing surfaces of the extension sections (21) on the same baffle (2) have inwardly formed grooves (211). The locking block (23) is slidably positioned... The spring (22) is placed in the sink (211) and supported between the sink (211) and the locking block (23). The locking block (23) is partially exposed from the opening of the sink (211) and is used to abut against the outside of the pipe to be welded. The opposite sides of the extension section (21) on the same baffle (2) are threaded with locking bolts (24). The locking bolts (24) are inserted into the extension section (21) and extend into the sink (211). The lower part of the exposed part of the locking block (23) is set as an inclined surface to facilitate the sliding of the pipe to be welded. The upper part of the exposed part of the locking block (23) is set as an arc surface that matches the curvature of the side of the pipe to be welded.

2. The flange welding positioner device according to claim 1, characterized in that: At least one of the baffles (2) has an inwardly recessed groove on its outer side, and a magnet (3) is embedded in the groove, with the magnet (3) protruding from the side of the baffle (2).

3. The flange welding positioner device according to claim 2, characterized in that: At least one of the baffles (2) has at least one cylindrical protrusion (25) on its outer side, the protrusion (25) engaging with the flange hole.

4. The flange welding positioner device according to claim 3, characterized in that: The upper part of the exposed portion of the card block (23) is covered with a layer of anti-slip rubber (231).

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