Welding device for pipeline and flange

Abstract

The utility model relates to the technical field of turnover welding devices, and provides a welding device for a pipeline and a flange, which comprises a rack, a pipeline clamping driving mechanism is mounted at one end of the rack, a pipeline support frame is arranged in the middle of the rack, and a first welding mechanism and a second welding mechanism are mounted at the other end of the rack; the first welding mechanism and the second welding mechanism each comprise a fixing frame, the fixing frames are arranged on the rack, welding gun horizontal adjusting assemblies are arranged on the fixing frames, welding gun angle adjusting assemblies are installed on the welding gun horizontal adjusting assemblies, first welding gun vertical adjusting assemblies are installed on the welding gun angle adjusting assemblies, and welding guns are installed on the first welding gun vertical adjusting assemblies. A flange positioning assembly is further arranged on the rack and close to the first welding mechanism and the second welding mechanism. The two side faces, connected with a pipeline, of a flange can be welded at the same time, the welding machining efficiency is high, meanwhile, the angle and the position of a welding gun are convenient to adjust, and the field welding applicability is good.

Description

Technical Field

[0001] This utility model relates to the field of flip welding device technology, and in particular to a welding device for pipes and flanges. Background Technology

[0002] A flange connection is a detachable joint in which two pipes, fittings or equipment are first fixed to a flange, then a flange gasket is placed between the two flanges, and finally the two flanges are tightened with bolts to make them tightly connected. It can realize the connection between stationary pipes and rotating or reciprocating equipment.

[0003] Before connecting flanges, they need to be pre-fixed to the pipe. Currently, welding is commonly used to connect and fix flanges and pipes. Welding between flanges and pipes is usually done manually. However, there are also some pipe-flange welding setups, such as the Chinese utility model patent with patent number CN201921793664.2, entitled "An Automatic Welding Fixture for Ventilation Duct Flanges." This device includes a base with a welding torch head slidably mounted on top. In use, the pipe is inserted into the clamping ring, and then the fixing screw is rotated to secure the pipe. The welding torch head is then slidably adjusted to the appropriate position and its angle is adjusted by rotation. During welding, the electric... The machine can drive the drive gear to rotate, which in turn drives the gear ring to rotate. The gear ring then drives the clamping ring to rotate, which in turn drives the pipe to rotate. This process is relatively labor-saving. The ring support frame provides support and guidance, making the pipe rotation more stable. After one side of the flange is welded to the pipe, the sliding mounting plate can be moved to move the position of the pipe and weld the other side of the flange. Although the above device can achieve the welding of the flange and the pipe, it requires welding one side of the flange and the pipe first, and only after welding one side can the other side of the flange and the pipe be welded. This results in low welding efficiency. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, this utility model provides a welding device for pipes and flanges, which can simultaneously weld both sides of the flange and pipe connection, with high welding efficiency. At the same time, the angle and position of the welding gun can be easily adjusted, and it has good applicability to on-site welding.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A welding apparatus for pipes and flanges includes a frame, a pipe clamping drive mechanism is installed at one end of the frame, a pipe support frame is provided at the middle position of the frame, and a first welding mechanism and a second welding mechanism are installed at the other end of the frame. The first welding mechanism is arranged along the axial direction of the pipe, and the second welding mechanism is arranged along the radial direction of the pipe.

[0007] Both the first welding mechanism and the second welding mechanism include a fixed frame, which is mounted on the platform. The fixed frame is equipped with a welding torch horizontal adjustment component, a welding torch angle adjustment component is mounted on the welding torch horizontal adjustment component, a first welding torch vertical adjustment component is mounted on the welding torch angle adjustment component, and a welding torch is mounted on the first welding torch vertical adjustment component. The welding direction of the welding torch is respectively towards both sides of the connection between the pipe and the flange.

[0008] A flange positioning assembly is also provided on the stand and near the first welding mechanism and the second welding mechanism.

[0009] As an improved technical solution, the welding torch horizontal adjustment assembly includes a first guide rail, which is mounted on the top of the fixed frame. A first fixed seat is slidably mounted on the first guide rail. The welding torch angle adjustment assembly is mounted on the first fixed seat. A first cylinder is mounted on the fixed frame at one end near the first guide rail, and the piston rod of the first cylinder is connected to the first fixed seat.

[0010] As an improved technical solution, the welding torch angle adjustment assembly includes a second fixed seat, which is mounted on the first fixed seat. A support rod is mounted on the second fixed seat, and a sleeve is adjustablely mounted on the support rod by a locking bolt. A connecting arm is bolted to the sleeve, and the first welding torch vertical adjustment assembly is mounted on the end of the connecting arm away from the sleeve.

[0011] A clamping and limiting mechanism is also provided between the sleeve and the connecting arm.

[0012] As an improved technical solution, the clamping and limiting mechanism includes a sleeve, which is disposed on the clamp. An adjusting rod is installed on the sleeve by an internal thread. Both ends of the adjusting rod extend outside the sleeve, with one end abutting against the connecting arm and the other end being equipped with a first adjusting knob.

[0013] As an improved technical solution, the sleeve is further provided with a limiting block, and the support rod is provided with a limiting groove that matches the limiting block. The limiting groove is arranged along the axial direction of the support rod.

[0014] As an improved technical solution, the first welding torch vertical adjustment assembly includes a third fixed seat, which is mounted on the connecting arm. A gear driven by a second adjustment knob is rotatably mounted on the third fixed seat. A rack that meshes with the gear teeth is movably mounted on the third fixed seat in the vertical direction. A welding torch fixed seat is connected to the bottom of the rack, and the welding torch is mounted on the welding torch fixed seat.

[0015] The top and bottom of the third fixing seat are respectively provided with fixing clips, the fixing clips are fitted onto the rack, the fixing clips are provided with openings, and the openings are provided with locking bolts.

[0016] As an improved technical solution, a second welding torch vertical adjustment component is further provided between the welding torch horizontal adjustment component and the welding torch angle adjustment component of the second welding mechanism;

[0017] The second welding torch vertical adjustment assembly includes a fourth fixed seat arranged in a vertical direction. The fourth fixed seat is connected to the end of the first fixed seat away from the first cylinder. A second guide rail is installed on the fourth fixed seat. A fifth fixed seat is slidably installed on the second guide rail in a vertical direction. The welding torch angle adjustment assembly of the second welding mechanism is installed on the fifth fixed seat.

[0018] The top of the fifth fixed seat is connected to an adjusting screw. The end of the adjusting screw away from the fifth fixed seat passes through the first fixed seat and is threadedly connected to the third adjusting knob. The third adjusting knob is rotatably mounted on the first fixed seat through a plane bearing.

[0019] As an improved technical solution, the flange positioning assembly includes a first base, which is mounted on the platform. The top of the first base abuts against the pipe, and a flange positioning block is provided on the side of the first base near the end of the pipe.

[0020] The platform is also equipped with a second base corresponding to the first base. A second cylinder is installed on the top of the second base. A push block is installed on the piston rod of the second cylinder. The push block and the flange positioning block form a space for clamping and positioning the flange.

[0021] As an improved technical solution, the flange positioning block is provided with an arc-shaped groove on the side near the push block that matches the outer periphery of the flange.

[0022] As an improved technical solution, the pipe clamping drive mechanism includes a third base, which is mounted on the frame. A drive motor is mounted on the top of the third base, and a pipe clamping jaw disk is mounted on the output shaft of the drive motor. Clamping jaws for clamping and fixing the pipe are movably mounted on the pipe clamping jaw disk.

[0023] After adopting the above technical solution, the beneficial effects of this utility model are:

[0024] By setting up a platform, a pipe clamping drive mechanism is installed at one end of the platform. The pipe clamping drive mechanism can clamp one end of the pipe and drive the pipe to rotate at a certain speed. A pipe support frame is set in the middle of the platform to support the middle of the pipe. A first welding mechanism and a second welding mechanism are installed at the other end of the platform. The first welding mechanism is set along the axial direction of the pipe, and the second welding mechanism is set along the radial direction of the pipe. The first welding mechanism and the second welding mechanism can simultaneously weld the two sides of the flange and the pipe connection, which improves the welding efficiency.

[0025] Both the first and second welding mechanisms include a fixed frame mounted on a platform. The fixed frame is equipped with a horizontal adjustment assembly for the welding torch, an angle adjustment assembly for the welding torch, and a first vertical adjustment assembly for the welding torch. The welding torch is mounted on the first vertical adjustment assembly. The welding direction of the welding torch is directed towards both sides of the connection between the pipe and the flange. The horizontal adjustment assembly allows adjustment of the welding torch's horizontal position, moving it closer to or further from the flange, facilitating the placement and removal of the flange and pipe. The angle adjustment assembly allows adjustment of the welding torch's angle, ensuring accurate welding position and welding quality. The vertical adjustment assembly allows adjustment of the welding torch's vertical position, moving it closer to or further from the flange, ensuring accurate welding position and welding quality.

[0026] A flange positioning assembly is also provided on the platform near the first and second welding mechanisms. The flange positioning assembly can position the flange to ensure that the welding position of the welding gun is at the connection between the flange and the pipeline after each clamping. After positioning, the flange is first connected to the pipeline by spot welding. Then, with the welding gun adjusted at the correct angle, the pipeline is driven to rotate by the pipeline clamping drive mechanism, thereby achieving full welding at the connection between the flange and the pipeline.

[0027] In summary, this utility model provides a welding device for pipes and flanges, which can simultaneously weld both sides of the flange and pipe connection, resulting in high welding efficiency. Furthermore, it allows for convenient adjustment of the welding torch angle and position, making it suitable for on-site welding. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. In addition, the elements or parts in the drawings are not necessarily drawn to actual scale.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a structural schematic diagram of the present invention from another angle.

[0031] Figure 3 This is a schematic diagram of the welding torch horizontal adjustment assembly, welding torch angle adjustment assembly, and clamping and limiting mechanism in this utility model.

[0032] Figure 4 for Figure 3 A structural diagram from another angle;

[0033] Figure 5 This is a schematic diagram of the flange positioning block in this utility model;

[0034] Figure label:

[0035] 1. Stand; 2. Pipe clamping drive mechanism; 201. Third base; 202. Drive motor; 203. Pipe clamping jaw disc; 204. Clamping jaw; 3. Pipe support frame; 4. First welding mechanism; 5. Second welding mechanism; 6. Fixing frame; 7. Welding torch horizontal adjustment assembly; 701. First guide rail; 702. First fixed seat; 703. First cylinder; 8. Welding torch angle adjustment assembly; 801. Second fixed seat; 802. Support rod; 803. Clamping sleeve; 804. Connecting arm; 805. Limiting block; 806. Limiting groove; 9. First welding torch vertical adjustment assembly; 901. Third fixed seat; 902. Second adjustment knob; 903. Gear; 9 04. Rack and pinion; 905. Welding torch holder; 906. Fixing clamp; 10. Welding torch; 11. Flange positioning assembly; 1101. First base; 1102. Flange positioning block; 1103. Second base; 1104. Second cylinder; 1105. Push block; 1106. Arc groove; 12. Tightening and limiting mechanism; 1201. Sleeve; 1202. Adjusting rod; 1203. First adjusting knob; 13. Second welding torch vertical adjustment assembly; 1301. Fourth fixing seat; 1302. Second guide rail; 1303. Fifth fixing seat; 1304. Adjusting screw; 1305. Third adjusting knob; 1306. Surface bearing; 14. Operating handle. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0039] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] like Figures 1-4 As shown, a welding device for pipes and flanges includes a frame 1. A pipe clamping drive mechanism 2 is installed at one end of the frame 1. The pipe clamping drive mechanism 2 can clamp one end of the pipe and drive the pipe to rotate at a certain speed. A pipe support frame 3 is provided in the middle of the frame 1 to support the middle of the pipe. A first welding mechanism 4 and a second welding mechanism 5 are installed at the other end of the frame 1. The first welding mechanism 4 is arranged along the axial direction of the pipe, and the second welding mechanism 5 is arranged along the radial direction of the pipe. The first welding mechanism 4 and the second welding mechanism 5 can weld the two sides of the flange and pipe connection at the same time, which improves the welding efficiency.

[0041] Both the first welding mechanism 4 and the second welding mechanism 5 include a fixed frame 6, which is mounted on the platform 1. The fixed frame 6 is equipped with a welding torch horizontal adjustment component 7, a welding torch angle adjustment component 8, a first welding torch vertical adjustment component 9, and a welding torch 10. The welding direction of the welding torch 10 is directed towards both sides of the connection between the pipe and the flange. The horizontal adjustment component 7 can adjust the horizontal position of the welding torch 10, allowing it to move closer to or away from the flange, facilitating the placement and removal of the flange and pipe. The angle adjustment component 8 can adjust the welding angle of the welding torch 10, ensuring the accuracy of the welding position and the welding quality. The vertical adjustment component 9 can adjust the vertical position of the welding torch 10, allowing it to move closer to or away from the flange, ensuring the accuracy of the welding position and the welding quality.

[0042] A flange positioning assembly 11 is also provided on the stand 1 near the first welding mechanism 4 and the second welding mechanism 5. The flange positioning assembly 11 can position the flange to ensure that the welding position of the welding gun 10 is at the connection between the flange and the pipeline after each clamping. After positioning, the flange is first connected to the pipeline by spot welding. Then, with the welding gun 10 after the angle is adjusted, the pipeline is driven to rotate by the pipeline clamping drive mechanism 2, thereby realizing the full welding of the connection between the flange and the pipeline.

[0043] like Figures 1-4 As shown, the welding torch horizontal adjustment assembly 7 includes a first guide rail 701, which is bolted to the top of the fixed frame 6. A first fixed seat 702 is slidably mounted on the first guide rail 701. The welding torch angle adjustment assembly 8 is bolted to the first fixed seat 702. A first cylinder 703 is mounted on the fixed frame 6 at one end near the first guide rail 701. The piston rod of the first cylinder 703 is connected to the first fixed seat 702. The extension and retraction of the piston rod of the first cylinder 703 can drive the first fixed seat 702 to move along the first guide rail 701, thereby driving the welding torch 10 to move in the horizontal direction.

[0044] like Figures 1-4As shown, the welding torch angle adjustment assembly 8 includes a second fixed seat 801, which is bolted to a first fixed seat 702. A support rod 802 is mounted on the second fixed seat 801, and a sleeve 803 is adjustablely mounted on the support rod 802 by a locking bolt. Specifically, the sleeve 803 is fitted onto the support rod 802 and has an opening with a locking bolt. The position of the sleeve 803 can be adjusted by loosening the locking bolt, and the position of the sleeve 803 can be fixed by tightening the locking bolt. A connecting arm 804 is bolted to the sleeve 803. The first welding torch vertical adjustment assembly 9 is mounted on the end of the connecting arm 804 away from the sleeve 803. Specifically, the end of the sleeve 803 connected to the connecting arm 804 has a connecting part, which is bolted to the connecting arm 804. An operating handle 14 is connected to the bolt, which can be tightened or loosened to facilitate the adjustment of the angle of the connecting arm 804.

[0045] A clamping and limiting mechanism 12 is also provided between the sleeve 803 and the connecting arm 804. The clamping and limiting mechanism 12 can clamp the connecting arm 804 to ensure that the connecting arm 804 will not rotate during long-term use.

[0046] like Figures 3-4 As shown, the clamping and limiting mechanism 12 includes a sleeve 1201, which is disposed on the clamp 803. In this embodiment, the sleeve 1201 and the clamp 803 are integral structures. An adjusting rod 1202 is installed on the internal thread of the sleeve 1201. Both ends of the adjusting rod 1202 extend outside the sleeve 1201, and one end abuts against the connecting arm 804. The other end is equipped with a first adjusting knob 1203. The adjusting rod 1202 can be rotated by the first adjusting knob 1203, thereby allowing the adjusting rod 1202 to move axially, thereby adjusting the distance between the adjusting rod 1202 and the connecting arm 804, which facilitates the adjustment of the connecting arm 804 and the fixation of the adjusted position.

[0047] like Figure 3 As shown, the sleeve 803 is also provided with a limiting block 805, and the support rod 802 is provided with a limiting groove 806 that matches the limiting block 805. The limiting groove 806 is set along the axial direction of the support rod 802. By setting the limiting block 805 and the limiting groove 806, the sleeve 803 can only be adjusted in position along the axial direction of the support rod 802 and will not rotate.

[0048] like Figures 1-4As shown, the first welding torch vertical adjustment assembly 9 includes a third fixed seat 901, which is mounted on the connecting arm 804. In this embodiment, the third fixed seat 901 and the connecting arm 804 are an integral structure. A gear 903 driven by a second adjustment knob 902 is rotatably mounted on the third fixed seat 901. A rack 904 that meshes with the gear 903 is movably mounted on the third fixed seat 901 in the vertical direction. A welding torch fixed seat 905 is connected to the bottom of the rack 904. The welding torch 10 is mounted on the welding torch fixed seat 905. The gear 903 can be rotated by the second adjustment knob 902. The gear 903 meshes with the rack 904 and drives the rack 904 to move upward or downward in the vertical direction, thereby driving the welding torch 10 to move upward or downward synchronously, so as to realize the adjustment of the position of the welding torch 10 in the vertical direction.

[0049] The top and bottom of the third fixing seat 901 are respectively provided with fixing clips 906. The fixing clips 906 are sleeved on the rack 904. The fixing clips 906 have openings and locking bolts. The fixing clips 906 can be clamped on the rack 904 by locking bolts and the position of the rack 904 can be fixed. The position of the rack 904 can be adjusted by loosening the locking bolts through the second adjusting knob 902.

[0050] like Figures 1-2 As shown, a second welding torch vertical adjustment component 13 is also provided between the welding torch horizontal adjustment component 7 and the welding torch angle adjustment component 8 of the second welding mechanism 5. The position of the welding torch 10 of the second welding mechanism 5 in the vertical direction can be further adjusted through the second welding torch vertical adjustment component 13, which facilitates the placement and disassembly of the pipeline.

[0051] The second welding torch vertical adjustment assembly 13 includes a fourth fixed seat 1301 arranged in the vertical direction. The fourth fixed seat 1301 is connected to the end of the first fixed seat 702 away from the first cylinder 703. In this embodiment, the fourth fixed seat 1301 and the first fixed seat 702 are integrally welded structures. A second guide rail 1302 is installed on the fourth fixed seat 1301 by bolts. The second guide rail 1302 is arranged in the vertical direction. A fifth fixed seat 1303 is slidably installed on the second guide rail 1302 in the vertical direction. The welding torch angle adjustment assembly 8 of the second welding mechanism 5 is installed on the fifth fixed seat 1303.

[0052] The top of the fifth fixed seat 1303 is connected to an adjusting screw 1304. The end of the adjusting screw 1304 away from the fifth fixed seat 1303 passes through the first fixed seat 702 and is threadedly connected to the third adjusting knob 1305. The third adjusting knob 1305 is rotatably mounted on the first fixed seat 702 through a plane bearing 1306. By rotating the third adjusting knob 1305, the adjusting screw 1304 can be moved axially. Since one end of the adjusting screw 1304 is connected to the fifth fixed seat 1303, the fifth fixed seat 1303 is moved along the second guide rail 1302, thereby realizing the adjustment of the position of the welding torch 10 in the vertical direction.

[0053] like Figures 1-2 and Figure 5 As shown, the flange positioning assembly 11 includes a first base 1101, which is mounted on the frame 1. The top of the first base 1101 abuts against the pipe. In this embodiment, rollers are rotatably mounted on the top of the first base 1101 along both sides of the pipe. The rollers abut against the pipe to facilitate pipe rotation. A flange positioning block 1102 is provided on the side of the first base 1101 near the end of the pipe.

[0054] The platform 1 is also equipped with a second base 1103 corresponding to the first base 1101. A second cylinder 1104 is installed on the top of the second base 1103. A push block 1105 is installed on the piston rod of the second cylinder 1104. The push block 1105 and the flange positioning block 1102 form a space for clamping and positioning the flange. By extending and retracting the piston rod of the second cylinder 1104, the push block 1105 can be driven to move closer to or further away from the flange positioning block 1102, thereby cooperating with the flange positioning block 1102 to achieve clamping and positioning of the flange.

[0055] like Figure 5 As shown, the flange positioning block 1102 has an arc-shaped groove 1106 on the side near the push block 1105 that is adapted to the outer periphery of the flange. The arc-shaped groove 1106 is adapted to the shape of the flange and the flange is positioned by conforming to the shape through the arc-shaped groove 1106.

[0056] like Figure 1As shown, the pipe clamping drive mechanism 2 includes a third base 201, which is bolted to the frame 1. A drive motor 202 is mounted on the top of the third base 201. A pipe clamping disk 203 is mounted on the output shaft of the drive motor 202. A clamping jaw 204 for clamping and fixing the pipe is movably mounted on the pipe clamping disk 203. The structure of the clamping jaw 204 and the pipe clamping disk 203 is common in daily life and is common knowledge to those skilled in the art, so it will not be described in detail here. The pipe is clamped and fixed by the clamping jaw 204. The drive motor 202 drives the pipe clamping disk 203 to rotate, thereby driving the pipe to rotate synchronously. Welding is achieved at the connection between the pipe and the flange by the welding torch 10.

[0057] For ease of understanding, the working process of this embodiment is described below:

[0058] like Figures 1-5 As shown, first, the flange is placed on the flange positioning block 1102. Then, the piston rod of the second cylinder 1104 extends and pushes the push block 1105 to move towards the flange positioning block 1102. The flange is clamped and positioned by the push block 1105 and the flange positioning block 1102. Then, one end of the pipe is connected to the flange, and the other end is clamped and fixed by the jaws 204 of the pipe clamping drive mechanism 2. Then, the pipe and the flange are spot welded. Then, the piston rod of the second cylinder 1104 retracts and drives the push block 1105 away from the flange positioning block 1102.

[0059] Then, the piston rod of the first cylinder 703 extends and pushes the welding torch 10 toward the connection between the pipe and the flange. Then, the second adjustment knob 902 is rotated. The second adjustment knob 902 drives the rack 904 to move downward in the vertical direction through the gear 903, and brings the welding head of the welding torch 10 closer to the connection between the flange and the pipe. Then, the fixing clamp 906 fitted on the rack 904 is locked onto the rack 904 by the locking bolt, and the rack 904 is limited.

[0060] Next, loosen the bolts between the connecting arm 804 and the sleeve 803 by operating the handle 14, and rotate the connecting arm 804 to adjust the welding angle of the welding torch 10 so that the welding head of the welding torch 10 corresponds to the connection seam of the pipe and flange. After the angle of the welding torch 10 is adjusted, tighten the bolts between the connecting arm 804 and the sleeve 803 by operating the handle 14. Then, rotate the first adjustment knob 1203. The first adjustment knob 1203 drives the adjustment rod 1202 to move axially and abut against the connecting arm 804 to tighten and limit the connecting arm 804.

[0061] Then, start the drive motor 202, which drives the pipe to rotate synchronously. At the same time, start the welding gun 10 and perform comprehensive welding on the connection between the pipe and the flange. After the welding is completed, the piston rod of the first cylinder 703 retracts and drives the welding gun 10 away from the pipe and flange, so that the welded workpiece can be removed.

[0062] In addition, during use, sometimes the welding torch 10 of the second welding mechanism 5 is far from the weld seam, but the welding torch 10 cannot be brought closer to the weld seam by relying on the first welding torch vertical adjustment component 9. Then, by rotating the third adjustment knob 1305, the adjustment screw 1304 is moved axially during the rotation of the third adjustment knob 1305. During the movement of the adjustment screw 1304, the fifth fixed seat 1303 is moved along the second guide rail 1302, so that the welding torch 10 is moved further in the vertical direction, thereby bringing the welding torch 10 closer to the weld seam.

[0063] In summary, this utility model provides a welding device for pipes and flanges, which can simultaneously weld both sides of the flange and pipe connection, resulting in high welding efficiency. Furthermore, it allows for convenient adjustment of the welding torch angle and position, making it suitable for on-site welding.

[0064] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A welding apparatus for pipes and flanges, characterized in that: The device includes a frame, one end of which is equipped with a pipe clamping drive mechanism, a pipe support frame is provided in the middle of the frame, and the other end of the frame is equipped with a first welding mechanism and a second welding mechanism. The first welding mechanism is arranged along the axial direction of the pipe, and the second welding mechanism is arranged along the radial direction of the pipe. Both the first welding mechanism and the second welding mechanism include a fixed frame, which is mounted on the platform. The fixed frame is equipped with a welding torch horizontal adjustment component, a welding torch angle adjustment component is mounted on the welding torch horizontal adjustment component, a first welding torch vertical adjustment component is mounted on the welding torch angle adjustment component, and a welding torch is mounted on the first welding torch vertical adjustment component. The welding direction of the welding torch is respectively towards both sides of the connection between the pipe and the flange. A flange positioning assembly is also provided on the stand and near the first welding mechanism and the second welding mechanism.

2. The welding apparatus for pipes and flanges as described in claim 1, characterized in that: The welding torch horizontal adjustment assembly includes a first guide rail, which is mounted on the top of the fixed frame. A first fixed seat is slidably mounted on the first guide rail. The welding torch angle adjustment assembly is mounted on the first fixed seat. A first cylinder is mounted on the fixed frame at one end near the first guide rail. The piston rod of the first cylinder is connected to the first fixed seat.

3. The welding apparatus for pipes and flanges as described in claim 2, characterized in that: The welding torch angle adjustment assembly includes a second fixed seat, which is mounted on the first fixed seat. A support rod is mounted on the second fixed seat. A sleeve is adjustablely mounted on the support rod by a locking bolt. A connecting arm is bolted to the sleeve. The first welding torch vertical adjustment assembly is mounted on the end of the connecting arm away from the sleeve. A clamping and limiting mechanism is also provided between the sleeve and the connecting arm.

4. The welding apparatus for pipes and flanges as described in claim 3, characterized in that: The clamping and limiting mechanism includes a sleeve disposed on the clamp. An adjusting rod is threaded on the sleeve. Both ends of the adjusting rod extend outside the sleeve, with one end abutting against the connecting arm and the other end being fitted with a first adjusting knob.

5. The welding apparatus for pipes and flanges as described in claim 3, characterized in that: The sleeve is also provided with a limiting block, and the support rod is provided with a limiting groove that matches the limiting block. The limiting groove is arranged along the axial direction of the support rod.

6. The welding apparatus for pipes and flanges as described in claim 3, characterized in that: The first welding torch vertical adjustment assembly includes a third fixed base, which is mounted on the connecting arm. A gear driven by a second adjustment knob is rotatably mounted on the third fixed base. A rack that meshes with the gear teeth is movably mounted on the third fixed base in the vertical direction. A welding torch fixed base is connected to the bottom of the rack. The welding torch is mounted on the welding torch fixed base. The top and bottom of the third fixing seat are respectively provided with fixing clips, the fixing clips are fitted onto the rack, the fixing clips are provided with openings, and the openings are provided with locking bolts.

7. The welding apparatus for pipes and flanges as described in claim 2, characterized in that: A second welding torch vertical adjustment component is also provided between the welding torch horizontal adjustment component and the welding torch angle adjustment component of the second welding mechanism; The second welding torch vertical adjustment assembly includes a fourth fixed seat arranged in a vertical direction. The fourth fixed seat is connected to the end of the first fixed seat away from the first cylinder. A second guide rail is installed on the fourth fixed seat. A fifth fixed seat is slidably installed on the second guide rail in a vertical direction. The welding torch angle adjustment assembly of the second welding mechanism is installed on the fifth fixed seat. The top of the fifth fixed seat is connected to an adjusting screw. The end of the adjusting screw away from the fifth fixed seat passes through the first fixed seat and is threadedly connected to the third adjusting knob. The third adjusting knob is rotatably mounted on the first fixed seat through a plane bearing.

8. The welding apparatus for pipes and flanges as described in claim 1, characterized in that: The flange positioning assembly includes a first base, which is mounted on the platform. The top of the first base abuts against the pipe, and a flange positioning block is provided on the side of the first base near the end of the pipe. The platform is also equipped with a second base corresponding to the first base. A second cylinder is installed on the top of the second base. A push block is installed on the piston rod of the second cylinder. The push block and the flange positioning block form a space for clamping and positioning the flange.

9. A welding apparatus for pipes and flanges as described in claim 8, characterized in that: The flange positioning block has an arc-shaped groove on the side near the push block that matches the outer periphery of the flange.

10. A welding apparatus for pipes and flanges as described in claim 1, characterized in that: The pipe clamping drive mechanism includes a third base, which is mounted on the frame. A drive motor is mounted on the top of the third base, and a pipe clamping jaw disk is mounted on the output shaft of the drive motor. Clamping jaws for clamping and fixing the pipe are movably mounted on the pipe clamping jaw disk.

Images