Shunt pipe welding tool

Abstract

The utility model discloses a shunting pipe welding tool, which relates to the technical field of welding, and comprises a tool base, the welding main body comprises at least two groups of welding structures, each group of welding structure comprises a first fixing frame and a second fixing frame, the first fixing frame is used for fixing the shunting main pipe, and the second fixing frame is used for fixing the shunting branch pipe; the gas inlet pipe is used for conveying protective gas to the shunting main pipe; the welding body is constructed to be rotatably installed on the tool base, and the welding body is suitable for rotating relative to the tool base so that any one of the at least two sets of welding structures can face the welding station. According to the shunting pipe welding tool, different shunting pipes can be flexibly switched for alternate welding, so that welding stress can be fully released, cracks caused by stress on welding spot positions are avoided, shielding gas can be input into the welding positions, a gas protection layer is formed at the welding positions, and the welding quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding fixture for a shunt pipe. Background Technology

[0002] Brazing technology is widely used, and copper pipes are often brazed for connections in air conditioning production. However, currently, weld cracks and leaks frequently occur at the weld points of the distributor assemblies after pipe welding, resulting in significant rework waste for the company, poor user experience for customers, and seriously affecting production quality and efficiency. There is room for improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a welding fixture for a manifold, which can provide nitrogen protection during the welding process and allows for alternating welding of different groups of structures, facilitating the full release of welding stress and improving welding quality.

[0004] According to an embodiment of the present invention, a welding fixture for a shunt pipe includes: a fixture base; a welding body, the welding body including at least two sets of welding structures, each set of welding structures including a first fixing frame and a second fixing frame, the first fixing frame being used to fix the main shunt pipe, and the second fixing frame being used to fix the branch shunt pipe; and an air inlet pipe for supplying protective gas to the main shunt pipe; wherein the welding body is configured to be rotatably mounted on the fixture base, and the welding body is adapted to rotate relative to the fixture base so that any one set of welding structures in the at least two sets faces the welding station.

[0005] According to the embodiment of this utility model, the welding fixture for the shunt pipe is configured with at least two rotatable welding structures relative to the fixture base, which allows for flexible switching between different shunt pipes for alternating welding. This facilitates the full release of welding stress, prevents cracks from forming at the weld point, and ensures the welding stability of the main shunt pipe and the branch shunt pipe. At the same time, by allowing the input of protective gas to the welding position, a gas protective layer is formed at the welding position, thereby improving the welding quality.

[0006] According to some embodiments of the present invention, the welding body of the shunt pipe welding fixture further includes a rotating connecting frame, which is rotatably connected to the fixture base. At least two sets of the welding structures are spaced apart on the rotating connecting frame along a first direction, and the first direction intersects the rotation axis of the rotating connecting frame.

[0007] According to some embodiments of the present invention, the first direction of the shunt pipe welding fixture is perpendicular to the rotation axis of the rotating connecting frame.

[0008] According to some embodiments of the present invention, the shunt pipe welding fixture has a rotating connecting frame with a rotating shaft, and the fixture base has a rotating seat, with the rotating shaft rotatably passing through the rotating seat.

[0009] According to some embodiments of the present utility model, the shunt pipe welding fixture is provided with two rotating shafts, and the two rotating shafts are respectively located at both ends of the rotating connecting frame. There are two rotating seats, which are matched one-to-one with the two rotating shafts.

[0010] At least one of the rotating shafts is provided with a rotation driving part, which extends from the rotating seat and is used to drive the rotating shaft to rotate relative to the rotating seat.

[0011] According to some embodiments of the present utility model, in the welding fixture for the shunt pipe, the first fixing frame and the second fixing frame of each group of the welding structures are distributed at intervals along the first direction on the rotating connecting frame;

[0012] The height of the first fixing frame of at least two sets of the welded structures increases sequentially along the first direction, and / or the height of the second fixing frame of at least two sets of the welded structures increases sequentially along the first direction.

[0013] According to some embodiments of the present invention, the welding fixture for the diversion pipe further includes a third fixing frame, which is distributed opposite to the first fixing frame along the length direction of the diversion pipe, and the air inlet pipe is installed on the third fixing frame.

[0014] According to some embodiments of the present invention, the welding fixture for the diversion pipe has multiple first fixing frames in each group of the welding structure. The multiple first fixing frames are distributed at intervals along the length direction of the diversion pipe and are used together to support the diversion pipe.

[0015] According to some embodiments of the present utility model, the first fixing frame has a through-hole for inserting the main branch pipe.

[0016] The first fixing frame is equipped with a movable clamping member, which is used to clamp the main diversion pipe at the through-hole.

[0017] According to some embodiments of the present invention, the second fixing frame is provided with a plurality of support grooves, the support grooves being used to support the branch pipes, and the plurality of support grooves being distributed at intervals along the length direction of the main branch pipe.

[0018] According to some embodiments of the present invention, the second fixing frame includes a support beam and two fixing columns, the two fixing columns are spaced apart, the support beam is connected to the upper end of the two fixing columns respectively, and the support beam is provided with the support groove.

[0019] According to some embodiments of the present invention, the shunt pipe welding fixture has an exhaust hole at the end of the support beam away from the intake pipe.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a three-dimensional schematic diagram of the welding fixture for the shunt tube according to an embodiment of the present utility model;

[0023] Figure 2 This is a three-dimensional schematic diagram (another perspective) of the shunt pipe welding fixture according to an embodiment of this utility model;

[0024] Figure 3 This is a partially enlarged view of the shunt pipe welding fixture according to an embodiment of this utility model.

[0025] Figure label:

[0026] 100mm welding fixture for shunt pipe

[0027] Tooling base 1, rotating seat 11,

[0028] Welding body 2, first fixing frame 21, through opening 211, clamping member 212, clamping part 213, rotating part 214, gripping part 215, second fixing frame 22, fixing column 221, support beam 222, support groove 223, exhaust hole 224, third fixing frame 23, rotating connecting frame 24, rotating shaft 241, rotating pushing part 242, air inlet pipe 25. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following is for reference. Figures 1-3 The present invention describes a shunt pipe welding fixture 100 according to an embodiment of the present invention. The shunt pipe welding fixture 100 can realize the fixed installation of the shunt main pipe and the shunt branch pipe, so as to facilitate the welding and fixing of the shunt main pipe and the shunt branch pipe. During the welding process, nitrogen protection can be applied to the welding position to ensure the welding quality. At the same time, the shunt pipe welding fixture 100 can weld at least two shunt pipes. By alternately welding at least two shunt pipes, the welding stress at the welding position is fully released, avoiding cracks caused by stress on the weld joint.

[0033] like Figures 1-3 As shown, a shunt pipe welding fixture 100 according to an embodiment of the present invention includes a fixture base 1. The fixture base 1 can be installed on the welding operation surface, such as being fixedly installed on the welding operation surface, or placed on the welding operation surface, or it can be detachably installed on the welding operation surface via a connector. The installation method of the fixture base 1 is flexible and convenient to use. The fixture base 1 can serve as the bottom support of the shunt pipe welding fixture 100, so that the shunt pipe welding fixture 100 is in a stable structural state during the shunt pipe welding process, thereby helping to ensure the accuracy of welding.

[0034] It should be noted that the distribution pipe includes a main distribution pipe and branch distribution pipes, and each distribution pipe may include multiple branch distribution pipes. The multiple branch distribution pipes can be welded to the main distribution pipe respectively, so that the fluid medium in the main distribution pipe can be distributed to the multiple branch distribution pipes.

[0035] The shunt pipe welding fixture 100 also includes a welding body 2, which comprises at least two sets of welding structures. Each set of welding structures includes a first fixing frame 21 and a second fixing frame 22. The first fixing frame 21 is used to fix the main shunt pipe, and the second fixing frame 22 is used to fix the branch shunt pipes. In other words, at least two sets of welding structures can be configured one-to-one with at least two shunt pipes, meaning each welding structure can simultaneously fix the main shunt pipe and multiple branch shunt pipes of each shunt pipe, facilitating welding and fixing by the operator. Therefore, the welding structures can be configured in two, three, or more sets, allowing the welding body 2 to support different numbers of shunt pipes, enabling the separate welding of multiple shunt pipes.

[0036] In actual welding, the main branch pipe can be fixed to the first fixing frame 21 to fix the position of the main branch pipe on the tooling base 1. At the same time, the branch pipe can be fixed to the second fixing frame 22 to fix the position of the branch pipe on the tooling base 1. Thus, the fixed branch pipe and main branch pipe can be welded to ensure the stability and reliability of the welding.

[0037] The distributor pipe welding fixture 100 also includes an inlet pipe 25, which is used to supply protective gas to the distributor pipe. The protective gas can be nitrogen or other similar gases.

[0038] In the specific connection, a nitrogen purging device can be connected to the air inlet pipe 25. That is, the inlet end of the air inlet pipe 25 is connected to the nitrogen purging device, and the outlet end of the air inlet pipe 25 is connected to the main branch pipe. Thus, nitrogen can be purged into the air inlet pipe 25 through the nitrogen purging device, and nitrogen can be supplied into the main branch pipe through the air inlet pipe 25. This allows the nitrogen to flow along the main branch pipe to the welding position of the main branch pipe and the branch pipe, thereby sealing the welding position with nitrogen, preventing air from entering, ensuring the nitrogen protection effect during welding, and improving the welding quality of the branch pipe and the branch pipe.

[0039] The welding body 2 is rotatably mounted on the tooling base 1. The welding body 2 is adapted to rotate relative to the tooling base 1 so that any one of the at least two sets of welding structures faces the welding station. Thus, the welding body 2 can rotate relative to the tooling base 1 to different angles so that different welding structures face the welding station, thereby enabling the shunt pipes on different welding structures to face the welding station and realizing the position switching of the welding structures.

[0040] In other words, by setting at least two sets of welding structures that can rotate together relative to the tooling base 1, during the actual welding process, the branch pipe and main pipe of one of the welding structures can be welded first. After a certain welding time, the welding body 2 is rotated so that the other welding structure faces the welding station. The operator can then weld the branch pipe and main pipe on the other welding structure. This allows the branch pipes on the two welding structures to be welded alternately, thereby allowing the welding position after high-temperature welding to fully release welding stress during the alternation process, avoiding cracks caused by stress on the weld point, and effectively preventing external forces from causing cracks on the weld point, ensuring welding quality and reducing the risk of cracking at the welding position.

[0041] According to the embodiment of this utility model, the shunt pipe welding fixture 100 is provided with at least two welding structures that can rotate relative to the fixture base 1, so as to flexibly switch different shunt pipes for alternating welding. This facilitates the full release of welding stress, avoids cracks caused by stress at the weld point, and ensures the welding stability of the main shunt pipe and the branch shunt pipe. At the same time, by inputting protective gas to the welding position, a gas protective layer is formed at the welding position, thereby improving the welding quality.

[0042] In some embodiments, the welding body 2 further includes a rotating connecting frame 24, which is rotatably connected to the tooling base 1. At least two sets of welding structures are spaced apart on the rotating connecting frame 24 along a first direction. That is, in actual construction, the rotating connecting frame 24 can be rotatably connected to the tooling base 1 via a rotating shaft 241, so that at least two sets of welding structures rotate together with the rotating connecting frame 24 relative to the working base, thereby realizing the switching of the positions of different diversion pipes.

[0043] Among them, such as Figure 1 and Figure 2 As shown, the tooling base 1 can be constructed as a rectangular frame, and a reinforcing beam can be set inside the rectangular frame to improve the structural strength of the tooling base 1. At the same time, the rotating connecting frame 24 can also be constructed as a rectangular frame, and the two end plates of the tooling base 1 and the two end plates of the rotating connecting frame 24 can be rotatably connected so that each welded structure can rotate along with the rotating connecting frame 24 during its rotation relative to the tooling base 1.

[0044] The first direction intersects the rotation axis of the rotating connecting frame 24, such as... Figure 1 and Figure 2As shown, the rotation axis of the rotating connecting frame 24 can be set along the length direction of the rotating connecting frame 24. The first direction can be the direction that intersects with the length direction of the rotating connecting frame 24, such as the width direction of the rotating connecting frame 24. Alternatively, the first direction can be set to other directions that form an angle with the length direction of the rotating connecting frame 24. The setting method is flexible and selectable. Thus, during the rotation of the rotating connecting frame 24, different welding structures can be switched and adjusted in position.

[0045] In a further embodiment, the first direction is perpendicular to the rotation axis of the rotating connecting frame 24, that is, the arrangement direction of at least two welded structures is perpendicular to the rotation axis of the rotating connecting frame 24. In this way, when the rotating connecting frame 24 rotates relative to the tooling base 1, at least two welded structures can achieve position switching with maximum stroke.

[0046] The rotation axis of the rotating connecting frame 24 is along the length of the rotating connecting frame 24, such as... Figure 1 and Figure 2 As shown, the rotation axis of the rotating connecting frame 24 is along the left-right direction in the figure. The first direction can be set along the width direction of the rotating connecting frame 24, that is, the first direction is along the left-right direction in the figure. Specifically, as shown... Figure 1 and Figure 2 As shown, the welding structure can be set into two groups, and the two groups of welding structures are distributed separately along the width direction of the rotating connecting frame 24.

[0047] Furthermore, the rotation axis of the rotating connecting frame 24 is located below the middle area between the two sets of welding structures. That is, the distance between the rotation axis and the two sets of welding structures can be set to be the same. This allows the operator to flexibly switch the two welding structures to face the welding station when rotating the rotating connecting frame 24, facilitating welding operations on the distributor pipe. The rotation angle of the rotating connecting frame 24 relative to the tooling base 1 can be set to less than or equal to 60°, or it can be set to other angles.

[0048] In some embodiments, the rotating connecting frame 24 is provided with a rotating shaft 241, and the tooling base 1 is provided with a rotating seat 11. The rotating shaft 241 is rotatably inserted through the rotating seat 11, that is, the rotating seat 11 is formed with a rotating through hole so that the rotating shaft 241 can be inserted through the rotating through hole and then rotatably supported on the rotating seat 11, which is convenient for the user to rotate the rotating connecting frame 24.

[0049] Among them, such as Figure 3As shown, the rotating shaft 241 can be located at the outer edge of the rotating connecting frame 24, and the rotating shaft 241 extends away from the rotating connecting frame 24. Simultaneously, the rotating seat 11 can be located on the upper surface of the tooling base 1, and the rotating seat 11 protrudes upward relative to the upper surface of the tooling base 1. A rotating through hole extends horizontally through the rotating seat 11. In actual installation, the rotating shaft 241 can be inserted through the rotating through hole, allowing the rotating shaft 241 to rotate relative to the horizontal direction within the rotating seat 11. Therefore, by inserting the rotating shaft 241 and the rotating seat 11, the rotating connecting frame 24 and the tooling base 1 can be rotated and installed, resulting in a simple structure and convenient installation.

[0050] In some embodiments, two rotating shafts 241 are provided, and the two rotating shafts 241 are respectively located at both ends of the rotating connecting frame 24, such as... Figure 2 As shown, rotating shafts 241 are provided at both ends of the rotating connecting frame 24 along its length. Specifically, a rotating shaft 241 is located at the left end of the rotating connecting frame 24, protruding to the left, and at the right end, it protrudes to the right. Simultaneously, there are two rotating seats 11, each corresponding to one of the two rotating shafts 241, as shown below. Figure 1 As shown, rotating seats 11 are provided on the upper surface of the left end and the upper surface of the right end of the tooling base 1. Thus, the two ends of the rotating connecting frame 24 are respectively rotated with the tooling base 1, thereby improving the rotational stability of the rotating connecting frame 24.

[0051] At least one rotating shaft 241 is provided with a rotating driving part 242, which extends from the rotating seat 11 and is used to drive the rotating shaft 241 to rotate relative to the rotating seat 11. Thus, the operator can operate the rotating driving part 242 to drive the rotating shaft 241 to rotate relative to the rotating seat 11, thereby realizing the rotation of the rotating connecting frame 24 and the welding structure. That is, the operator can manually control the rotation of the rotating connecting frame 24 to ensure that the rotation position of the rotating connecting frame 24 meets the operator's welding requirements.

[0052] Specifically, such as Figure 3 As shown, a through-hole is provided on the upper end face of the rotating base 11. The through-hole communicates with the rotating through hole and is open upwards. The rotating pushing part 242 is constructed as a pushing column, which is connected to the outer surface of the rotating shaft 241 and extends from the through-hole. The through-hole is an elongated opening that extends circumferentially along the rotating base 11. Thus, when the connecting frame 24 is rotated, the rotating pushing part 242 can be pushed to move along the through-hole, thereby causing the rotating shaft 241 to rotate within the rotating base 11, achieving position switching of the welding structure. The structure is simple and the operation is convenient.

[0053] In some embodiments, the first fixing frame 21 and the second fixing frame 22 of each group of welded structures are spaced apart on the rotating connecting frame 24 along a first direction. That is, the first fixing frame 21 and the second fixing frame 22 can be spaced apart along a direction perpendicular to the rotation axis of the rotating connecting frame 24, so that after the first fixing frame 21 fixes the main branch pipe and the second fixing frame 22 fixes the branch pipe, the main branch pipe and the branch pipe are distributed in the first direction.

[0054] It should be noted that during actual installation, the main branch pipe can extend along the rotation axis of the rotating connecting frame 24, and the branch pipes can extend along the first direction or a direction with a smaller angle to the first direction. The main branch pipe has multiple branch holes, and multiple branch pipes can be welded to these corresponding branch holes one by one. Thus, the ends of the branch pipes can extend along the first direction to the corresponding branch holes for welding, thereby achieving welding and fixing of the two.

[0055] In this configuration, the height of the first fixing frame 21 of at least two sets of welded structures increases sequentially along the first direction, thus differentiating the heights of the first fixing frames 21 for multiple sets of welded structures, resulting in different heights for the various branch pipes fixed by the multiple sets of welded structures; and / or, the height of the second fixing frame 22 of at least two sets of welded structures increases sequentially along the first direction, thus differentiating the heights of the second fixing frames 22 for multiple sets of welded structures, resulting in different heights for the various branch pipes fixed by the multiple sets of welded structures. In this way, when the rotating connector is rotated at an angle, the main and branch pipes on different welded structures can be positioned at heights close to the welding station, facilitating accurate welding and fixing of different branch pipes.

[0056] In some embodiments, the welding body 2 further includes a third fixing frame 23, which is distributed opposite to the first fixing frame 21 along the length of the main distribution pipe. The air inlet pipe 25 is installed on the third fixing frame 23. Thus, after the main distribution pipe is fixed to the first fixing frame 21 and the air inlet pipe 25 is fixed to the third fixing frame 23, the end of the main distribution pipe is connected to the end of the air inlet pipe 25, so that the air inlet pipe 25 can deliver nitrogen into the main distribution pipe, which is beneficial to protect the welding position.

[0057] The third fixing bracket 23 may be provided with a mounting hole, through which the air intake pipe 25 passes. The mounting hole is adapted to be positioned directly opposite the main diversion pipe so that the air intake pipe 25 can communicate with the end of the main diversion pipe.

[0058] In actual installation, the third fixing bracket 23 and the first fixing bracket 21 can be integrally formed on the top of the rotating connecting bracket 24, or the third fixing bracket 23 and the first fixing bracket 21 can be detachably installed on the rotating connecting bracket 24. For example, if a plug-in hole is provided on the rotating connecting bracket 24, the lower end of the third fixing bracket 23 can be plugged into the plug-in hole to fix the two. The third fixing bracket 23 can be constructed as a column, which is simple in structure and easy to install.

[0059] In some embodiments, each group of welded structures has multiple first fixing frames 21, which are spaced apart along the length of the main branch pipe and work together to support the main branch pipe. The first fixing frames 21 can be two, three, or more, so that the spaced-apart first fixing frames 21 can provide fixed support for the main branch pipe at different positions along its length, thereby improving the stability of the support.

[0060] like Figure 1 and Figure 2 As shown, four first fixing frames 21 can be provided, and the four first fixing frames 21 are distributed at intervals along the length of the rotating connecting frame 24, and the spacing between each first fixing frame 21 is relatively uniform, so as to uniformly support the main pipe at multiple positions along the length, thereby ensuring the stability of the support for the main pipe.

[0061] In a further embodiment, the first fixing frame 21 is formed with a through-hole 211 for inserting the diversion main pipe. The multiple first fixing frames 21 are provided with through-holes 211, and the through-holes 211 of the multiple first fixing frames 21 are distributed facing each other, so that the diversion main pipe can be inserted into the through-holes 211 of the multiple first fixing frames 21.

[0062] Specifically, such as Figure 1 As shown, multiple first fixing frames 21 are distributed at intervals along the rotation axis of the rotating connecting frame 24, and each first fixing frame 21 has a through-hole 211 on its top. The through-hole 211 is constructed as a V-shaped opening with the top of the first fixing frame 21 facing upward. In this way, the main branch pipe can be supported from top to bottom on multiple through-holes 211 at the same time, and the main branch pipe can be placed in the center under the action of the inclined inner wall of the V-shaped opening, so that the main branch pipe has a stable welding environment and ensures welding quality.

[0063] The first fixing frame 21 is provided with a movable clamping member 212, which is used to clamp the main branch pipe at the through-hole 211. That is, after the main branch pipe is placed in the through-hole 211, the clamping member 212 moves relative to the first fixing frame 21 so that the clamping member 212 blocks and shields the through-hole 211, thereby keeping the main branch pipe inside the through-hole 211.

[0064] In actual design, the clamping member 212 can be configured to be rotatable relative to the first fixed frame 21. The clamping member 212 includes a clamping part 213, a rotating part 214 and a gripping part 215. The clamping part 213, the rotating part 214 and the gripping part 215 are connected in sequence, and the rotating part 214 is rotatably connected to the first fixed frame 21. The clamping part 213 can move to the top of the insertion opening 211 during the rotation of the rotating part 214. The operator can grip the gripping part 215 to drive the rotating part 214 to rotate, thereby driving the clamping part 213 to move relative to the insertion opening 211.

[0065] Therefore, when it is necessary to place the main branch pipe, the gripping part 215 can be driven to move the clamping part 213 so that the clamping part 213 is misaligned with the through-hole 211. At this time, the main branch pipe can be placed at the through-hole 211, and then the gripping part 215 can be driven to move the clamping part 213 so that the clamping part 213 moves above the through-hole 211, so that the clamping part 213 can clamp the main branch pipe, thereby realizing the fixed installation of the main branch pipe. The structure is simple, the disassembly and assembly are convenient, and it can be quickly fixed and replaced.

[0066] In some embodiments, the second fixing frame 22 is provided with a plurality of support grooves 223 for supporting the branch pipes. The plurality of support grooves 223 are distributed at intervals along the length direction of the main branch pipe, that is, each support groove 223 can support a branch pipe individually to achieve the support and fixation of the branch pipes. Thus, when welding the main branch pipe and the branch pipes, the main branch pipe and the branch pipes can maintain a stable position, that is, avoid the situation where the main branch pipe and the branch pipes are unstable in contact and automatically separate during the welding process, thereby improving the welding reliability.

[0067] The number of support grooves 223 can be flexibly set, such as corresponding one-to-one with the diversion holes on the main diversion pipe, which is conducive to fixing multiple diversion branches.

[0068] In a further embodiment, the second fixing frame 22 includes a support beam 222 and two fixed columns 221, which are spaced apart. The support beam 222 is connected to the upper ends of the two fixed columns 221 respectively. The two fixed columns 221 are spaced apart along the length of the main diversion pipe, and their lower ends are fixedly connected to the rotating connecting frame 24. Simultaneously, both ends of the support beam 222 are connected to the upper ends of the two fixed columns 221 respectively, so that the two fixed columns 221 effectively support the support beam 222.

[0069] The support beam 222 is provided with a support groove 223, that is, when the branch pipe is supported by the support groove 223, the weight of the branch pipe is borne on the top of the support beam 222. There are multiple support grooves 223, which are spaced apart along the length of the support beam 222, so that the support beam 222 can support multiple branch pipes.

[0070] In some embodiments, the support beam 222 is also provided with an exhaust port 224 at the end away from the air inlet pipe 25, so that the nitrogen gas filled into the main pipe can be discharged from the exhaust port 224, so that nitrogen gas can be continuously input into the main pipe, thereby ensuring that the welding position is always protected by shielding gas.

[0071] Specifically, such as Figure 1 As shown, the third fixed bracket 23 and the intake pipe 25 are both located at the right end of the rotating connecting bracket 24, and the exhaust port 224 is located at the left end of the support beam 222. This allows the exhaust port 224 to be positioned away from the intake pipe 25. It should be noted that the exhaust port 224 can also serve as a support groove 223. That is, after a branch pipe located at the left end is connected to the main branch pipe, the end of the branch pipe can be supported within the exhaust port 224, allowing nitrogen gas in the main branch pipe to be discharged from the exhaust port 224. Of course, when other support grooves 223 support branch pipes, nitrogen gas in the branch pipes can also be discharged from the corresponding support groove 223, making the structure more flexible.

[0072] The shunt pipe welding fixture 100 in this utility model can realize the fixed welding of two shunt pipes, specifically as follows: Figure 1 and Figure 2 As shown, during actual welding, the main branch pipe is placed in the first fixing frame 21, and a nitrogen purging device is connected to the inlet pipe 25. Nitrogen gas enters from the inlet pipe 25, generating nitrogen turbulence to seal the pipe opening and prevent air from entering, ensuring the nitrogen protection effect during welding. Additionally, a branch pipe is installed in the second fixing frame 22, and the main branch pipe is fixed using a clamp 212. Nitrogen gas enters from the opening of the main branch pipe, and excess nitrogen gas is discharged from the nitrogen exhaust port 224 at the end of the pipe, preventing excessive internal pressure in the pipeline from affecting the needle welding quality.

[0073] During the welding process, brazing is performed alternately on multiple locations of the branch pipes and main branch pipes on both welded structures, starting from the nitrogen-filling end, until the work is completed. This process allows for the full release of welding stress, preventing cracks from forming at the weld joints due to stress, and also effectively avoids external forces causing cracks. Furthermore, the use of a dedicated directional fixing track keeps the nitrogen filling port fixed, effectively ensuring the nitrogen protection effect and significantly improving the overall quality of the branch pipe welding.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding fixture for a shunt pipe, characterized in that, include: Tooling base (1); The welding body (2) includes at least two sets of welding structures. Each set of welding structures includes a first fixing frame (21) and a second fixing frame (22). The first fixing frame (21) is used to fix the main branch pipe, and the second fixing frame (22) is used to fix the branch pipe. An intake pipe (25) is used to supply protective gas to the main distribution pipe; The welding body (2) is configured to be rotatably mounted on the tooling base (1), and the welding body (2) is adapted to rotate relative to the tooling base (1) so that any one of the at least two sets of welding structures faces the welding station.

2. The welding fixture for the shunt pipe according to claim 1, characterized in that, The welding body (2) further includes a rotating connecting frame (24), which is rotatably connected to the tooling base (1). At least two sets of the welding structures are spaced apart on the rotating connecting frame (24) along a first direction, which intersects the rotation axis of the rotating connecting frame (24).

3. The welding fixture for the shunt pipe according to claim 2, characterized in that, The first direction is perpendicular to the rotation axis of the rotating connecting frame (24).

4. The welding fixture for the shunt pipe according to claim 2, characterized in that, The rotating connecting frame (24) is provided with a rotating shaft (241), and the tooling base (1) is provided with a rotating seat (11). The rotating shaft (241) is rotatably inserted through the rotating seat (11).

5. The welding fixture for the shunt pipe according to claim 4, characterized in that, The rotating shaft (241) is configured as two, and the two rotating shafts (241) are respectively located at both ends of the rotating connecting frame (24). The rotating seat (11) is two and is matched with the two rotating shafts (241) one by one. At least one of the rotating shafts (241) is provided with a rotating push part (242), which extends from the rotating seat (11) and is used to drive the rotating shaft (241) to rotate relative to the rotating seat (11).

6. The welding fixture for the shunt pipe according to claim 2, characterized in that, The first fixing frame (21) and the second fixing frame (22) of each group of welded structures are spaced apart on the rotating connecting frame (24) along the first direction; The height of the first fixing frame (21) of at least two sets of the welded structures increases sequentially along the first direction, and / or the height of the second fixing frame (22) of at least two sets of the welded structures increases sequentially along the first direction.

7. The welding fixture for the shunt pipe according to claim 2, characterized in that, The welding body (2) also includes a third fixing frame (23), which is distributed opposite to the first fixing frame (21) along the length direction of the main diversion pipe, and the air intake pipe (25) is installed on the third fixing frame (23).

8. The welding fixture for the shunt pipe according to claim 1, characterized in that, Each group of the welded structures has multiple first fixing frames (21), which are distributed at intervals along the length of the main diversion pipe and are used together to support the main diversion pipe.

9. The welding fixture for the shunt pipe according to claim 1, characterized in that, The first fixing frame (21) has a through-hole (211) for inserting the main diversion pipe; The first fixing frame (21) is provided with a movable clamping member (212), which is used to clamp the diversion main pipe at the through-hole (211).

10. The welding fixture for the shunt pipe according to claim 1, characterized in that, The second fixing frame (22) is provided with a plurality of support grooves (223), which are used to support the branch pipe. The plurality of support grooves (223) are distributed at intervals along the length direction of the main branch pipe.

11. The welding fixture for the shunt pipe according to claim 10, characterized in that, The second fixing frame (22) includes a support beam (222) and two fixing columns (221). The two fixing columns (221) are spaced apart. The support beam (222) is connected to the upper end of the two fixing columns (221) respectively. The support beam (222) is provided with the support groove (223).

12. The welding fixture for the shunt pipe according to claim 11, characterized in that, The support beam (222) is also provided with an exhaust port (224) at the end away from the air intake pipe (25).

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