Welding device for annular pipe assembly

Abstract

The utility model relates to a welding device for an annular pipe assembly, the annular pipe assembly comprises an annular pipe body with a cavity, a plurality of V-shaped grooves oppositely arranged in the cavity of the annular pipe body and a plurality of steel wires penetrating through the V-shaped grooves, and the welding device comprises a welding machine table; the welding piece is arranged at one end of the welding machine table; the clamping piece is arranged at the other end of the welding machine table and comprises a profiling tool for sleeving the annular pipe body, a rotating tool connected with the profiling tool and driving the annular pipe body to rotate and a groove formed in the upper surface of the rotating tool and allowing a steel wire to penetrate through, and the profiling tool is connected with the welding piece; the steel wire penetrates through the V-shaped groove to be tightly attached to the annular pipe body and is welded to the end of the annular pipe body through a welding piece. Compared with the prior art, the annular pipe assembly has the advantages that the stability of the production process is improved, the welding point failure of the steel wire and the annular pipe body is prevented, and the corrosion resistance of the annular pipe assembly is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of resistance welding, in particular to a welding device for an annular pipe assembly. Background Art

[0002] Medical endoscopes use bending wires to bend the annular tube in different directions. If the wire falls off during the bending process, it will lead to failure of the operation and cause serious consequences. Therefore, strict standards are set for the strength and stability of the connection between the bending wire and the annular tube. Based on relevant documents and literature, the welding process is explored through field tests.

[0003] At present, the connection between bent steel wire and annular tube in the market is mainly based on soldering and gluing. The connection process requires the addition of solder for fusion, and the heat resistance is relatively poor. The electrochemical corrosion caused by the large difference in the composition of the base material and the solder results in poor corrosion resistance and high production and assembly requirements. The stability of the production process is uncontrollable and prone to the risk of falling off.

[0004] CN111644796A discloses an endoscope turntable welding tool, including a body, a turntable positioning groove is provided at one end of the front of the body, a welding notch is provided on the side wall of the turntable positioning groove for facilitating welding, a wire module positioning groove is provided on one side of the turntable positioning groove, a through hole is provided at the bottom center of the turntable positioning groove for the turntable shaft workpiece to pass through; a locking mechanism that can limit the rotation of the turntable shaft workpiece is provided at a position of the body corresponding to the back of the turntable positioning groove. However, the welding tool still needs to add solder for welding, and calibration and heat treatment processes still need to be arranged after welding, and the corrosion resistance is poor. Utility Model Content

[0005] The purpose of the utility model is to provide a welding device for an annular pipe assembly in order to overcome the defects of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A welding device for an annular pipe assembly, the annular pipe assembly comprising an annular pipe body having a cavity, a plurality of V-shaped grooves arranged relatively in the cavity of the annular pipe body, and a plurality of steel wires passing through the V-shaped grooves, the welding device comprising:

[0008] Welding machine;

[0009] A welding part arranged at one end of the welding machine;

[0010] And a clamping piece arranged at the other end of the welding machine, which includes a profiling tooling for the annular tube body to be sleeved, a rotating tooling connected to the profiling tooling and driving the annular tube body to rotate, and a groove arranged on the upper surface of the rotating tooling for the steel wire to pass through, the profiling tooling is connected to the welding piece, the steel wire passes through the V-shaped groove and is tightly attached to the annular tube body and is welded to the end of the annular tube body by the welding piece.

[0011] Furthermore, the welding part includes a positioning spot welding rod connected to the contour tooling, and an upper spot welding rod lifted and arranged above the positioning spot welding rod, and the positioning spot welding rod and the upper spot welding rod form a welding loop.

[0012] Furthermore, the welding part also includes a welding base, a first support base arranged at one end of the welding base, and a second support base arranged at the other end of the welding base, the positioning spot welding rod is installed on the first support base, and the upper spot welding rod is installed on the first support base.

[0013] Furthermore, the second support seat includes a first column installed on the welding base, a horizontal column connected to one end of the first column, a second column extending from one end of the horizontal column away from the first column, and a sliding seat slidably arranged on the first column and used to install a spot welding rod.

[0014] Furthermore, the surface of the sliding seat has a plurality of screw holes with different heights.

[0015] Furthermore, the welding part also includes a welding power source arranged next to the welding base.

[0016] Furthermore, the clamping member also includes a slide rail installed on the welding machine, a slider matching the slide rail, and a U-shaped groove provided at one end of the slider close to the welding member, and the rotating tool is connected to the U-shaped groove by bolts.

[0017] Furthermore, a button which is electrically connected to the slider is also provided on the upper surface of the welding machine.

[0018] Furthermore, the clamping member also includes a wire pressing clamp arranged on the upper surface of the rotating tooling.

[0019] Furthermore, the welding device also includes a display screen installed on the welding machine, and a camera installed on the welding machine and connected to the display screen by telecommunication.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. In the utility model, the positioning spot welding rod and the upper spot welding rod form a welding loop, and resistance welding is used. No welding materials such as welding wire and welding rod are required, which reduces the uncontrollable factors in the operation and the rejection reaction after the operation caused by the different welding materials at the ends of the annular tube assembly. In addition, the heating time is short and the heat is concentrated, so the heat-affected zone is small, and the deformation and stress are also small. Usually, there is no need to arrange correction and heat treatment procedures after welding. When the molten core is formed, the annular tube body and the steel wire will melt together. The molding process of the annular tube assembly is more stable and the welding point is more reliable, which ensures that the annular tube assembly is assembled in the later stage, so that the final product is 100% qualified and the risk of desoldering is avoided.

[0022] 2. The clamping piece of the utility model is conveniently designed. The welding of two steel wires can be completed by adjusting the angle. The corresponding clamping piece is selected according to the products of different sizes, which effectively guarantees the size. The real-time image makes the spot welding process more controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the device in Example 1.

[0024] Figure 2 This is a partial schematic diagram of the welding parts of the device in Example 1.

[0025] Figure 3 This is a partial schematic diagram of the clamping member of the device in Example 1.

[0026] Figure 4 It is a side view of the annular plate body in the annular tube assembly without welded steel wires.

[0027] Numbers in the figure:

[0028] 100-annular tube body, 200-V-shaped groove, 300-steel wire, 1-welding machine, 2-welding parts, 201-positioning spot welding rod, 202-upper spot welding rod, 203-welding base, 204-first support seat, 205-second support seat, 206-first column, 207-cross column, 208-second column, 209-sliding seat, 210-screw hole, 211-welding power supply, 3-clamping part, 301-contact tooling, 302-rotating tooling, 303-groove, 304-slide rail, 305-slider, 306-U-shaped groove, 307-wire pressure clamp, 308-button, 4-display screen, 5-camera. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0030] Features such as component models, material names, connection structures, control methods, etc. that are not clearly stated in this technical solution shall be deemed as common technical features disclosed in the prior art.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "multiple" means two or more than two, unless otherwise specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a bolt connection or a welding connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In order to improve the stability of the production process, prevent the failure of the welding point between the steel wire and the annular tube body, and improve the corrosion resistance of the annular tube assembly, the utility model provides a welding device for the annular tube assembly, see Figures 1 to 4 As shown, the annular tube assembly includes an annular tube body 100 having a cavity, a plurality of V-shaped grooves 200 arranged relatively in the cavity of the annular tube body 100, and a plurality of steel wires 300 passing through the V-shaped grooves 200. The welding device includes:

[0034] Welding machine 1;

[0035] A welding piece 2 disposed at one end of the welding machine 1;

[0036] And a clamping piece 3 arranged at the other end of the welding machine, which includes a profiling tool 301 for the annular tube body 100 to be mounted, a rotating tool 302 connected to the profiling tool 301 and driving the annular tube body 100 to rotate, and a groove 303 arranged on the upper surface of the rotating tool 302 for the steel wire 300 to pass through. The profiling tool 301 is connected to the welding piece 2, and the steel wire 300 passes through the V-groove 200 and is tightly attached to the annular tube body 100 and is welded to the end of the annular tube body 100 by the welding piece 2.

[0037] In this embodiment, the profiling tooling 301 is matched with the inner cavity of the annular tube body 100, so that the annular tube body 100 is sleeved on the profiling tooling 301, and the profiling tooling 301 is fixedly connected to the rotating tooling 302. Before the annular tube body 100 is sleeved on the profiling tooling 301, the rotating tooling 302 is rotated to a suitable angle so that the annular tube body 100 can be sleeved. After the annular tube body 100 is sleeved on the profiling tooling 301, the profiling tooling 301 is connected to the welding piece 2, and the steel wire 300 passes through the V-groove 200 from one end of the rotating tooling 302 and is tightly attached to the annular tube body 100, and the welding piece 2 welds the steel wire 300 to the end of the annular tube body 100.

[0038] In some specific implementations, please refer to Figure 3 As shown, the welding piece 2 includes a positioning spot welding rod 201 connected to the profiling tool 301, and an upper spot welding rod 202 which is lifted and arranged above the positioning spot welding rod 201, and the positioning spot welding rod 201 and the upper spot welding rod 202 form a welding loop.

[0039] In this embodiment, the positioning spot welding rod 201 and the upper spot welding rod 202 form a welding loop, and resistance welding is used. There is no need for welding materials such as welding wire and welding rods and other filler metals, which reduces the uncontrollable factors in the operation and the rejection reaction after the operation caused by the different welding materials at the ends of the annular tube assembly. In addition, the heating time is short and the heat is concentrated, so the heat-affected zone is small, and the deformation and stress are also small. Usually, there is no need to arrange correction and heat treatment processes after welding. When the molten core is formed, the annular tube body 100 and the steel wire 300 will melt together. The molding process of the annular tube assembly is more stable and the welding points are more reliable, which ensures that the annular tube assembly is assembled in the later stage, so that the final product is 100% qualified and the risk of desoldering is avoided.

[0040] For more specific implementations, please refer to Figure 3 As shown, the welding part 2 also includes a welding base 203, a first support base 204 arranged at one end of the welding base 203, and a second support base 205 arranged at the other end of the welding base 203, the positioning spot welding rod 201 is installed on the first support base 204, and the upper spot welding rod 202 is installed on the first support base 204.

[0041] For more specific implementations, please refer to Figure 3 As shown, the second support seat 205 includes a first column 206 installed on the welding base 203, a horizontal column 207 connected to one end of the first column 206, a second column 208 extending from one end of the horizontal column 207 away from the first column 206, and a sliding seat 209 slidably arranged on the first column 206 and used to install the spot welding rod 202.

[0042] For more specific implementations, please refer to Figure 3 As shown, the surface of the sliding seat 209 has a plurality of screw holes 210 at different heights.

[0043] In this embodiment, there are screw holes 210 at different heights on the sliding seat 209. The sliding seat 209 slides on the first column 206. The horizontal height of the sliding seat 209 is adjustable by fixing the screw holes 210 at different heights, so that the upper spot welding rod 202 and the positioning spot welding rod 201 form a welding loop.

[0044] For more specific implementations, please refer to Figure 3 and Figure 1 As shown, the welding component 2 also includes a welding power source 211 arranged next to the welding base 203.

[0045] In this embodiment, the welding power source 211 provides electrical energy to the welding workpiece 2 .

[0046] In some specific implementations, please refer to Figure 2 As shown, the clamping member 3 also includes a slide rail 304 installed on the welding machine 1, a slider 305 matching the slide rail 304, and a U-shaped groove 306 provided at one end of the slider 305 close to the welding member 2, and the rotating tooling 302 is connected to the U-shaped groove 306 by bolts.

[0047] In this embodiment, the slider 305 slides on the slide rail 304, so that the rotating tool 302 set on the slider 305 can approach the direction of the welding part 2, so that the profiling tool 301 is connected to the welding part 2. In addition, the slider 305 is provided with a U-shaped groove 306, and the U-shaped groove 306 is bolted to the rotating tool 302. When the annular tube body 100 is sleeved on the profiling tool 301, the bolts can be loosened and tightened so that the rotating tool 302 can be rotated to a suitable angle, and the profiling tool 301 is driven by the rotating tool 302 to rotate to a suitable angle, and then the annular tube body 100 is sleeved, and finally the rotating tool 302 is rotated to return, and the bolts are tightened.

[0048] For more specific implementations, please refer to Figure 1 As shown, a button 308 electrically connected to the slider 305 is also provided on the upper surface of the welding machine 1 .

[0049] In some specific implementations, please refer to Figure 3 As shown, the clamping member 3 further includes a wire pressing clamp 307 arranged on the upper surface of the rotating tooling 302 .

[0050] In this embodiment, the wire press 307 is used to press the steel wire 300 before welding the steel wire 300 to the main body of the annular tube 100 .

[0051] In some specific implementations, please refer to Figure 1 As shown, the welding device further includes a display screen 4 mounted on the welding machine 1 , and a camera 5 mounted on the welding machine 1 and electrically connected to the display screen 4 .

[0052] The above embodiments may be implemented individually or in any combination of two or more.

[0053] The above implementation is described in more detail below in conjunction with specific examples.

[0054] Example 1

[0055] In order to improve the stability of the production process, prevent the failure of the welding point between the steel wire and the annular tube body, and improve the corrosion resistance of the annular tube assembly, this embodiment provides a welding device for the annular tube assembly, see Figures 1 to 4 As shown, the annular tube assembly includes an annular tube body 100 having a cavity, six V-shaped grooves 200 arranged oppositely in the cavity of the annular tube body 100, and two steel wires 300 passing through the V-shaped grooves 200, wherein three V-shaped grooves 200 are arranged along the length direction of the annular tube body 100, and the remaining V-shaped grooves 200 are arranged opposite to the above three V-shaped grooves 200, one steel wire passes through the three V-shaped grooves 200, and the other steel wire 300 passes through the remaining V-shaped grooves 200; the welding device includes:

[0056] Welding machine 1;

[0057] A welding piece 2 disposed at one end of a welding machine 1;

[0058] And a clamping member 3 is arranged at the other end of the welding machine, which includes a profiling tool 301 for the annular tube body 100 to be mounted, a rotating tool 302 connected to the profiling tool 301 and driving the annular tube body 100 to rotate, and a groove 303 arranged on the upper surface of the rotating tool 302 for the steel wire 300 to pass through. The profiling tool 301 is connected to the welding member 2, and the steel wire 300 passes through the V-groove 200 and is tightly attached to the annular tube body 100 and is welded to the end of the annular tube body 100 by the welding member 2.

[0059] In this embodiment, the profiling tool 301 is matched with the inner cavity of the annular tube body 100, so that the annular tube body 100 is sleeved on the profiling tool 301, and the profiling tool 301 is fixedly connected to the rotating tool 302. Before the annular tube body 100 is sleeved on the profiling tool 301, the rotating tool 302 is rotated to a suitable angle so that the annular tube body 100 can be sleeved. After the annular tube body 100 is sleeved on the profiling tool 301, the profiling tool 301 is connected to the welding piece 2, and the steel wire 300 passes through the V-groove 200 from one end of the rotating tool 302 and is tightly attached to the annular tube body 100, and the welding piece 2 welds the steel wire 300 to the end of the annular tube body 100.

[0060] Please see again Figure 3 As shown, the weldment 2 includes a positioning spot welding rod 201 connected to the contour tooling 301, and an upper spot welding rod 202 which is lifted and arranged above the positioning spot welding rod 201, and the positioning spot welding rod 201 and the upper spot welding rod 202 form a welding loop.

[0061] In this embodiment, the positioning spot welding rod 201 and the upper spot welding rod 202 form a welding loop, and resistance welding is used. There is no need for welding materials such as welding wire and welding rods and other filler metals, which reduces the uncontrollable factors in the operation and the rejection reaction after the operation caused by the different welding materials at the ends of the annular tube assembly. In addition, the heating time is short and the heat is concentrated, so the heat-affected zone is small, and the deformation and stress are also small. Usually, there is no need to arrange correction and heat treatment processes after welding. When the molten core is formed, the annular tube body 100 and the steel wire 300 will melt together. The molding process of the annular tube assembly is more stable and the welding points are more reliable, which ensures that the annular tube assembly is assembled in the later stage, so that the final product is 100% qualified and the risk of desoldering is avoided.

[0062] Please see again Figure 3 As shown, the welding part 2 also includes a welding base 203, a first support base 204 arranged at one end of the welding base 203, and a second support base 205 arranged at the other end of the welding base 203, the positioning spot welding rod 201 is installed on the first support base 204, and the upper spot welding rod 202 is installed on the first support base 204.

[0063] Please see again Figure 3 As shown, the second support seat 205 includes a first column 206 installed on the welding base 203, a horizontal column 207 connected to one end of the first column 206, a second column 208 extending from one end of the horizontal column 207 away from the first column 206, and a sliding seat 209 slidably arranged on the first column 206 and used to install the spot welding rod 202.

[0064] Please see again Figure 3 As shown, the surface of the sliding seat 209 has a plurality of screw holes 210 at different heights.

[0065] In this embodiment, there are screw holes 210 at different heights on the sliding seat 209. The sliding seat 209 slides on the first column 206. The horizontal height of the sliding seat 209 is adjustable by fixing the screw holes 210 at different heights, so that the upper spot welding rod 202 and the positioning spot welding rod 201 form a welding loop.

[0066] Please see again Figure 3 and Figure 1 As shown, the welding piece 2 further includes a welding power source 211 disposed beside the welding base 203 .

[0067] In this embodiment, the welding power source 211 provides electrical energy to the welding workpiece 2 .

[0068] Please see again Figure 2 As shown, the clamping member 3 also includes a slide rail 304 installed on the welding machine 1, a slider 305 matching the slide rail 304, and a U-shaped groove 306 provided at one end of the slider 305 close to the welding member 2, and the rotating tooling 302 is connected to the U-shaped groove 306 by bolts.

[0069] In this embodiment, the slider 305 slides on the slide rail 304, so that the rotating tool 302 set on the slider 305 can approach the welding part 2, so that the profiling tool 301 is connected to the welding part 2. In addition, the slider 305 is provided with a U-shaped groove 306, and the U-shaped groove 306 is bolted to the rotating tool 302. When the annular tube body 100 is sleeved on the profiling tool 301, the bolts can be loosened and tightened so that the rotating tool 302 can be rotated to a suitable angle, and the profiling tool 301 is driven by the rotating tool 302 to rotate to a suitable angle, and then the annular tube body 100 is sleeved, and finally the rotating tool 302 is rotated to return, and the bolts are tightened.

[0070] Please see again Figure 1 As shown, a button 308 electrically connected to the slider 305 is also provided on the upper surface of the welding machine 1 .

[0071] Please see again Figure 3 As shown, the clamping member 3 further includes a wire pressing clamp 307 arranged on the upper surface of the rotating tooling 302 .

[0072] In this embodiment, the wire press 307 is used to press the steel wire 300 before welding the steel wire 300 to the main body of the annular tube 100 .

[0073] Please see again Figure 1 As shown, the welding device further includes a display screen 4 mounted on the welding machine 1 , and a camera 5 mounted on the welding machine 1 and electrically connected to the display screen 4 .

[0074] The working principle of this embodiment is as follows:

[0075] First, loosen the bolts between the rotating fixture 302 and the U-shaped groove 306. It should be noted that the rotating axis between the rotating fixture 302 and the U-shaped groove 306 is parallel to the slide. After loosening the bolts, the rotating fixture 302 can rotate in a direction perpendicular to the slide. Adjust the angle of the rotating fixture 302. Since the rotating fixture 302 is fixedly connected to the profiling fixture 301, the profiling fixture 301 is adjusted accordingly. The angle refers to the angle between the rotating fixture 302 and the welding machine 1. Adjust to a suitable angle so that the annular tube body 100 is sleeved on the profiling fixture 301. Then adjust the angle back to its original position and tighten the rotating fixture 302. After the bolt between the U-shaped groove 306 is returned to its original position, the groove 303 is kept level with the upper surface of the V-shaped groove 200, the button 308 is pressed, the slider 305 moves toward the positioning spot welding rod 201, so that the contour tooling 301 is connected with the positioning spot welding rod 201, and the steel wire 300 passes from the groove 303 on the slider 305 to the V-shaped groove 200 until it is on the positioning spot welding rod 201. The camera 5 is aimed at the steel wire 300, and the display screen 4 observes whether the steel wire 300 is placed properly. After it is placed properly, the steel wire pressing clamp 307 presses the steel wire 300, and then the welding power supply 211 is turned on, and the upper spot welding rod 202 moves to the steel wire 30 0 end and press against the positioning welding rod 201 to form a loop, and then weld. After welding, the upper spot welding rod 202 returns to its position, the slider 305 returns to its position, and the bolts between the rotating fixture 302 and the U-shaped groove 306 are loosened. Then the rotating fixture 302 is rotated 180 degrees so that the V-shaped groove 200 opposite to the steel wire 300 just welded faces upward. Then the angle is adjusted back to its original position and the bolts between the rotating fixture 302 and the U-shaped groove 306 are tightened. The groove 303 is kept horizontal with the upper surface of the V-shaped groove 200. The button 308 is pressed, and the slider 305 moves toward the positioning spot welding rod 201, so that the profiling fixture 301 and the positioning The spot welding rod 201 is connected, and another steel wire 300 is passed from the groove 303 on the slider 305 into the V-groove 200 opposite to the steel wire 300 just welded until it is positioned on the spot welding rod 201. The camera 5 is aimed at the steel wire 300, and the display screen 4 observes whether the steel wire 300 is placed properly. After placement, the wire pressing clamp 307 presses the steel wire 300, and then the welding power supply 211 is turned on. The upper spot welding rod 202 moves to the end of the steel wire 300 and presses against the positioning welding rod 201 to form a loop, and welding is performed. After welding is completed, the upper spot welding rod 202 returns to its position, the slider 305 returns to its position, and the annular tube assembly is taken out.

[0076] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A welding device for an annular tube assembly, the annular tube assembly comprising an annular tube body (100) having a cavity, a plurality of V-shaped grooves (200) arranged relatively in the cavity of the annular tube body (100), and a plurality of steel wires (300) passing through the V-shaped grooves (200), characterized in that: The welding device comprises: Welding machine (1); A welding piece (2) arranged at one end of a welding machine (1); and a clamping member (3) arranged at the other end of the welding machine (1), comprising a profiling tool (301) for the annular tube body (100) to be sleeved, a rotating tool (302) connected to the profiling tool (301) and driving the annular tube body (100) to rotate, and a groove (303) arranged on the upper surface of the rotating tool (302) for the steel wire (300) to pass through, the profiling tool (301) being connected to the welding member (2), the steel wire (300) passing through the V-shaped groove (200) and closely attached to the annular tube body (100) and being welded to the end of the annular tube body (100) by the welding member (2).

2. A welding device for an annular pipe assembly according to claim 1, characterized in that: The welding piece (2) comprises a positioning spot welding rod (201) connected to the contour tooling (301), and an upper spot welding rod (202) which is lifted and arranged above the positioning spot welding rod (201), and the positioning spot welding rod (201) and the upper spot welding rod (202) form a welding loop.

3. A welding device for an annular pipe assembly according to claim 2, characterized in that: The welding part (2) further comprises a welding base (203), a first support base (204) arranged at one end of the welding base (203), and a second support base (205) arranged at the other end of the welding base (203), the positioning spot welding rod (201) being mounted on the first support base (204), and the upper spot welding rod (202) being mounted on the first support base (204).

4. A welding device for an annular pipe assembly according to claim 3, characterized in that: The second support seat (205) comprises a first column (206) mounted on the welding base (203), a transverse column (207) connected to one end of the first column (206), a second column (208) extending from one end of the transverse column (207) away from the first column (206), and a sliding seat (209) slidably arranged on the first column (206) and used for mounting the spot welding rod (202).

5. A welding device for an annular pipe assembly according to claim 4, characterized in that: The surface of the sliding seat (209) is provided with a plurality of screw holes (210) at different heights.

6. A welding device for an annular pipe assembly according to claim 3, characterized in that: The welding component (2) also includes a welding power source (211) arranged next to the welding base (203).

7. A welding device for an annular pipe assembly according to claim 1, characterized in that: The clamping member (3) further comprises a slide rail (304) mounted on the welding machine (1), a slider (305) matching the slide rail (304), and a U-shaped groove (306) provided at one end of the slider (305) in a direction close to the welding member (2); the rotating tool (302) is connected to the U-shaped groove (306) by bolts.

8. A welding device for an annular pipe assembly according to claim 7, characterized in that: The upper surface of the welding machine (1) is also provided with a button (308) which is electrically connected to the slider (305).

9. A welding device for an annular pipe assembly according to claim 1, characterized in that: The clamping member (3) further comprises a wire pressing clamp (307) arranged on the upper surface of the rotating tooling (302).

10. A welding device for an annular pipe assembly according to claim 1, characterized in that: The welding device further comprises a display screen (4) mounted on the welding machine (1), and a camera (5) mounted on the welding machine (1) and connected to the display screen (4) via telecommunication.

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