Flange welding device for exhaust system

Abstract

An exhaust system flange welding device comprises a main body, the main body comprises a bearing mechanism, a fixing mechanism, a welding mechanism and a discharging mechanism, the bearing mechanism is used for placing a to-be-machined flange, the fixing mechanism is used for fixing the to-be-machined flange to the bearing mechanism, the welding mechanism is used for welding the to-be-machined flange, and the discharging mechanism is used for discharging the to-be-machined flange. The welding mechanism is used for conducting welding operation on the to-be-machined flange so that a first connecting flange and a second connecting flange of the to-be-machined flange can be connected through a connecting piece, the discharging mechanism is used for separating the to-be-machined flange from the bearing mechanism, the main body structure is simple, the operation difficulty is small, the welding efficiency is high, and the welding efficiency is high. And the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of flange processing, in particular to an exhaust system flange welding device. Background Art

[0002] Flange is a common connection structure in the mechanical field. According to its shape, it can be divided into circular flange, elliptical flange, etc. The flange can be used to connect two shafts, or be arranged at the end of a pipe to achieve connection between pipes, or be arranged at the inlet and outlet of equipment (such as an engine) to play a connecting role.

[0003] The processing quality of the flange directly affects the connection quality. In some flange applications, such as exhaust systems, it is usually necessary to weld two flanges together through bolts or other connectors, or to set a sealing gasket between the two flanges and then weld them together through bolts or other connectors to ensure the sealing performance of the flange connection. Therefore, the welding quality of the flange will affect the normal operation of the exhaust system, and it is urgent to propose an exhaust system flange welding device that can ensure welding accuracy. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an exhaust system flange welding device with simple structure, precise positioning and high welding quality.

[0005] The utility model provides an exhaust system flange welding device, comprising a main body, wherein the main body comprises a supporting mechanism, a fixing mechanism, a welding mechanism and a unloading mechanism, wherein the supporting mechanism is used for placing a flange to be processed, the fixing mechanism is used for fixing the flange to be processed to the supporting mechanism, the welding mechanism is used for performing a welding operation on the flange to be processed so that a first connecting flange and a second connecting flange of the flange to be processed are connected through a connecting piece, and the unloading mechanism is used for separating the flange to be processed from the supporting mechanism.

[0006] In one embodiment, the supporting mechanism includes a supporting platform, the supporting platform is used to place the flange to be processed, a positioning groove is formed on the supporting platform, and the positioning groove is matched with the first connecting flange and / or the second connecting flange.

[0007] In one embodiment, the supporting mechanism further includes at least two positioning columns, which are protruded from the supporting platform and located at the outer periphery of the positioning groove, and are used to contact the side walls of the first connecting flange and the second connecting flange, or only contact the side walls of the second connecting flange.

[0008] In one embodiment, the supporting mechanism further includes a function plate, which is located above the supporting platform and detachably connected to the supporting platform. The positioning groove is provided on the function plate, and the positioning groove penetrates the function plate in the up-down direction.

[0009] In one embodiment, the fixing mechanism includes a first pressing piece, which is provided with an avoidance groove that cooperates with the second connecting hole of the second connecting flange. The first pressing piece is located above the second connecting flange and can contact the second connecting flange.

[0010] In one embodiment, the fixing mechanism includes a limit member, and the limit member includes a second pressure member and a positioning member. The area of ​​the direct projection of the second pressure member in the up and down directions is larger than the area of ​​the direct projection of the positioning member in the up and down directions. The second pressure member is used to contact the upper surface of the second connecting flange. The positioning member cooperates with the functional hole of the second connecting flange, and the positioning member can be inserted into the functional hole.

[0011] In one embodiment, the first pressing member and / or the limiting member are configured to be movable in an up-down direction relative to the flange to be processed.

[0012] In one embodiment, the welding mechanism comprises a welding head, and the welding head cooperates with the position of the connecting member to weld the connecting member.

[0013] In one embodiment, the welding mechanism includes a driving member, which is connected to the welding head and is used to drive the welding head to move in an up-and-down direction.

[0014] In one embodiment, the unloading mechanism includes a lifting member, which is arranged below the supporting platform and can move in an up and down direction relative to the supporting platform. A unloading hole that cooperates with the connecting member is opened in the positioning groove, and the lower end of the connecting member passes through the unloading hole. The lifting member can contact the lower end of the connecting member to lift the connecting member upward.

[0015] The beneficial effects of the utility model are:

[0016] The fixing mechanism cooperates with the supporting mechanism to place and fix the flange to be processed, so that the flange to be processed can keep its position fixed during the welding process, thereby preventing poor welding caused by shaking or deflection of the flange to be processed;

[0017] The welding mechanism is used to perform welding operation on the flange to be processed, so as to connect the first connecting flange and the second connecting flange into one body through the connecting piece; the unloading mechanism cooperates with the supporting mechanism, and when the welding operation is completed, the unloading mechanism is used to separate the flange to be processed from the supporting mechanism, so as to facilitate the removal of the flange to be processed from the supporting mechanism, thereby improving the unloading efficiency;

[0018] The overall structure of the main body is simple, which improves the convenience of operation, ensures the welding quality of the flange to be processed, improves the welding efficiency, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the main body of an embodiment of the utility model;

[0021] Figure 2 This is a structural schematic diagram of a supporting mechanism according to an embodiment of the utility model;

[0022] Figure 3 This is a structural schematic diagram of a fixing mechanism and a welding mechanism according to an embodiment of the utility model;

[0023] Figure 4 This is a structural schematic diagram of a fixing mechanism and a welding mechanism of an embodiment of the utility model from another angle;

[0024] Figure 5 It is a structural schematic diagram of the main body of an embodiment of the utility model from another angle;

[0025] Figure 6 This is an exploded view of a flange to be processed according to an embodiment of the utility model.

[0026] In the figure:

[0027] 10-supporting mechanism; 11-supporting platform; 111-positioning groove; 112-positioning column; 12-functional board; 113-discharging hole; 114-supporting plate;

[0028] 20-fixing mechanism; 21-first pressing member; 211-avoidance groove; 22-limiting member; 221-second pressing member; 222-positioning member; 223-through rod; 224-connecting rod;

[0029] 30-welding mechanism; 31-welding head; 32-driving member; 321-first driving source; 3211-output shaft; 322-guide rod; 323-reinforcement member;

[0030] 40-unloading mechanism; 41-lifting member; 42-second driving source;

[0031] 50- flange to be processed; 51- first connecting flange; 511- first connecting hole; 512- opening; 52- second connecting flange; 521- second connecting hole; 522- functional hole; 53- connecting piece;

[0032] 60-bracket; 61-first support plate; 62-second support plate; 63-guide plate; 631-guide hole; 64-base. DETAILED DESCRIPTION

[0033] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0036] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0037] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0038] As attached Figure 1As shown, the exhaust system flange welding device proposed by the utility model includes a main body, which includes a supporting mechanism 10, a fixing mechanism 20, a welding mechanism 30 and a discharge mechanism 40. The supporting mechanism 10 is used to place the flange 50 to be processed. The fixing mechanism 20 cooperates with the supporting mechanism 10 to fix the flange 50 to be processed to the supporting mechanism 10 to prevent the placement position of the flange 50 to be processed from shifting, and to prevent the flange 50 to be processed from shaking during the processing process to affect the welding quality. Figure 2 The welding mechanism 30 is used to perform welding operations on the flange 50 to be processed, so that the first connecting flange 51 and the second connecting flange 52 of the flange 50 to be processed are connected through the connecting piece 53. The unloading mechanism 40 cooperates with the supporting mechanism 10 to separate the flange 50 to be processed from the supporting mechanism 10 to improve the unloading efficiency.

[0039] As attached Figure 1 As shown in the coordinate system, for the convenience of understanding the positional relationship, connection relationship and movement relationship of the various components in the utility model, the direction along the X-axis is defined as the left-right direction, wherein the direction indicated by the arrow is right, the direction along the Y-axis is defined as the front-back direction, wherein the direction indicated by the arrow is back, and the direction along the Z-axis is defined as the up-down direction, wherein the direction indicated by the arrow is up. The aforementioned coordinate system is intended to illustrate a possible embodiment of the utility model, and does not mean that the various components of the main body can only be set in this orientation. Those skilled in the art can flexibly select the position of each component according to actual needs.

[0040] In one embodiment of the present invention, as shown in the attached Figure 2 As shown, the supporting mechanism 10 includes a supporting platform 11, which is used to place the flange 50 to be processed. A positioning groove 111 is opened on the supporting platform 11, and the positioning groove 111 is matched with the flange 50 to be processed. More specifically, the positioning groove 111 is matched with the first connecting flange 51 and / or the second connecting flange 52, and the shape of the orthographic projection of the positioning groove 111 in the up and down directions is matched with the shape of the orthographic projection of the first connecting flange 51 and / or the second connecting flange 52 in the up and down directions. When the flange 50 to be processed is placed on the supporting platform 11, the first connecting flange 51 and / or the second connecting flange 52 can be installed in the positioning groove 111 to achieve rapid positioning.

[0041] Since the first connecting flange 51 is located below the second connecting flange 52 during the welding operation, the groove depth of the positioning groove 111 in the up-down direction may be less than or equal to the thickness of the first connecting flange 51 in the up-down direction, may be greater than the thickness of the first connecting flange 51 in the up-down direction and less than the sum of the thicknesses of the first connecting flange 51 and the second connecting flange 52, and may be equal to or greater than the sum of the thicknesses of the first connecting flange 51 and the second connecting flange 52. Technicians in this field may select the groove depth of the positioning groove 111 according to actual needs.

[0042] In an optional scheme, the supporting mechanism 10 also includes at least two positioning columns 112, which are protruding from the supporting platform 11 and arranged on the outer periphery of the positioning groove 111. When the first connecting flange 51 and the second connecting flange 52 are placed in the positioning groove 111, the positioning columns 112 are used to contact the side walls of the first connecting flange 51 and the second connecting flange 52, or only contact the side walls of the second connecting flange 52. The positioning columns 112 cooperate with the positioning groove 111 to ensure the stable placement of the first connecting flange 51 and the second connecting flange 52, and the setting of the positioning columns 112 can be adapted to first connecting flanges 51 and second connecting flanges 52 of different thicknesses, and has stronger adaptability than only setting the positioning groove 111.

[0043] In one embodiment of the present invention, as shown in the attached Figure 2 As shown, the supporting mechanism 10 also includes a functional plate 12, which is located above the supporting platform 11 and is detachably connected to the supporting platform 11. A positioning groove 111 is opened on the functional plate 12 and penetrates the functional plate 12 along the up and down directions. With such an arrangement, a functional plate 12 with positioning grooves 111 of different specifications can be selected according to the specifications of the flange 50 to be processed, so as to realize the placement and positioning of a variety of flanges 50 to be processed, thereby improving the applicability of the supporting mechanism 10.

[0044] In one embodiment of the present invention, as shown in the attached Figure 2 As shown, when the supporting mechanism 10 also includes a positioning column 112, the positioning column 112 is protruded on the functional plate 12. With such a configuration, functional plates 12 of different specifications can be selected according to the specifications of the flange 50 to be processed, so as to achieve the placement and positioning of various flanges 50 to be processed, thereby improving the applicability of the supporting mechanism 10.

[0045] In an optional solution, the function board 12 and the supporting platform 11 are detachably connected by screw connection, so as to facilitate the disassembly and assembly of the function board 12, and the replacement is convenient and the applicability is strong.

[0046] As attached Figure 2 As shown, the flange 50 to be processed includes a first connecting flange 51, a second connecting flange 52 and a connecting member 53. Figure 6A first connecting hole 511 is provided on the first connecting flange 51, and a second connecting hole 521 is provided on the second connecting flange 52. The first connecting hole 511 and the second connecting hole 521 are both set as through holes. When the first connecting flange 51 is connected to the second connecting flange 52, the second connecting flange 52 overlaps the first connecting flange 51. The position of the first connecting hole 511 corresponds to the position of the second connecting hole 521, and they are connected through a connecting piece 53. The welding mechanism 30 is used to weld the connecting piece 53 into the first connecting hole 511 and the second connecting hole 521, so that the first connecting flange 51 and the second connecting flange 52 are connected as a whole to prevent the connecting piece 53 from falling off.

[0047] In an optional solution, two of the first connection holes 511 and the second connection holes 521 are provided, and the connection member 53 is provided as a bolt.

[0048] In an optional solution, the first connecting flange 51 and the second connecting flange 52 are substantially diamond-shaped, and of course they may also be circular flanges or flanges of other shapes.

[0049] In an optional solution, when the flange 50 to be processed is applied to an exhaust system, a sealing gasket or a sealing ring may be provided between the first connecting flange 51 and the second connecting flange 52 to improve its sealing performance when applied in the exhaust system.

[0050] In one embodiment of the present invention, Figure 3 and attached Figure 4 The fixing mechanism 20 includes a first pressing piece 21, on which is opened an avoidance groove 211 cooperating with the second connecting hole 521. The first pressing piece 21 is located above the second connecting flange 52 and can contact the upper surface of the second connecting flange 52 and apply force to the second connecting flange 52 so that the first connecting flange 51 and the second connecting flange 52 are tightly fitted. The avoidance groove 211 is used to avoid the connecting piece 53.

[0051] In an optional embodiment, the first pressure piece 21 is configured to be able to move in the up and down directions relative to the support platform 11. When it moves downward until it contacts the second connecting flange 52, the first connecting flange 51 and the second connecting flange 52 are fixed. When it moves upward, the first connecting flange 51 and the second connecting flange 52 are released.

[0052] In an optional solution, the number of the first pressing pieces 21 is set to two, and their positions are set corresponding to the positions of the second connecting holes 521 of the second connecting flange 52, and the two first pressing pieces 21 are distributed above the flange 50 to be processed along the front-to-back direction.

[0053] As attached Figure 6As shown, a functional hole 522 is formed on the second connecting flange 52 , and the functional hole 522 penetrates the second connecting flange 52 in the up-down direction. In some possible application scenarios, the functional hole 522 can be used to connect a pipeline, such as an exhaust pipeline.

[0054] In one embodiment of the present invention, as shown in the attached Figure 3 As shown, the fixing mechanism 20 also includes a limiting member 22, which is combined with the attached Figure 4 The limiting member 22 includes a second pressing member 221 and a positioning member 222. The area of ​​the orthographic projection of the second pressing member 221 in the up and down directions is larger than the area of ​​the orthographic projection of the positioning member 222 in the up and down directions. The second pressing member 221 is used to contact the upper surface of the second connecting flange 52 and apply force to the second connecting flange 52 so that the first connecting flange 51 and the second connecting flange 52 fit tightly to ensure the welding quality of the connecting member 53. The positioning member 222 is used to cooperate with the functional hole 522 of the second connecting flange 52. When the limiting member 22 fixes the second connecting flange 50, the positioning member 222 is penetrated into the functional hole 522. Through the setting of the positioning member 222, the position of the second connecting flange 52 can be guaranteed to be accurate, so that the welding position of the connecting member 53 is accurate, thereby improving the processing quality of the flange 50 to be processed.

[0055] In an optional embodiment, the limit member 22 is configured to be able to move in the up and down directions relative to the support platform 11. When it moves downward until it contacts the second connecting flange 52, the first connecting flange 51 and the second connecting flange 52 are fixed. When it moves upward, the first connecting flange 51 and the second connecting flange 52 are released.

[0056] In an optional solution, the first pressure piece 21 is connected to the limiting piece 22. More specifically, the front and rear ends of the first pressure piece 21 and the second pressure piece 221 are connected. The cooperation between the first pressure piece 21 and the limiting piece 22 can improve the fixing quality of the flange 50 to be processed to ensure welding efficiency.

[0057] As attached Figure 6 As shown, the first connecting flange 51 includes an opening 512, and the opening 512 passes through the first connecting flange 51 in the up-down direction. In an optional solution, as shown in FIG. Figure 4 As shown, the limiting member 22 also includes a through rod 223, one end of the through rod 223 is connected to the positioning member 222, and the other end is a free end. The through rod 223 cooperates with the opening 512. When the limiting member 22 is fixed to the second connecting flange 50, the through rod 223 is passed through the opening 512. Such a setting can ensure the accurate position of the first connecting flange 51 to ensure welding efficiency.

[0058] In one embodiment of the present invention, as shown in the attached Figure 3As shown, the welding mechanism 30 includes a welding head 31, and the setting position of the welding head 31 corresponds to the connecting member 53, and is used to weld the connecting member 53, the first connecting flange 51 and the second connecting flange 52 to one place.

[0059] In one alternative, as shown in the attached Figure 3 As shown, the welding mechanism 30 includes a driving member 32, which is connected to the welding head 31 and is used to drive the welding head 31 to move in the up and down directions. When welding operation is required on the flange 50 to be processed, the driving member 32 drives the welding head 31 to move downward until its position matches the connecting member 53.

[0060] In one alternative, as shown in the attached Figure 1 As shown, the main body includes a bracket 60, which includes a first support plate 61, a second support plate 62 and a guide plate 63. The first support plate 61 and the second support plate 62 are arranged relatively spaced apart in the left-right direction, and the first support plate 61 and the second support plate 62 are parallel. The guide plate 63 is connected to the upper ends of the first support plate 61 and the second support plate 62. A guide hole 631 is opened on the guide plate 63, and the guide hole 631 penetrates the guide plate 63 in the up-down direction.

[0061] As attached Figure 3 As shown, the driving member 32 includes a first driving source 321 and a guide rod 322 connected to the welding head 31. The first driving source 321 is located above the guide plate 63. The guide plate 63 is provided with an axial hole that cooperates with the output shaft 3211 of the first driving source 321. The output shaft 3211 of the first driving source 321 passes through the axial hole and is connected to the guide rod 322 to drive the welding head 31 to move in the up and down directions. The guide rod 322 is passed through the guide hole 631 and can move in the up and down directions relative to the guide hole 631. The guide rod 322 can play a guiding role to make the up and down movement of the welding head 31 smooth and reduce shaking.

[0062] As attached Figure 3 As shown, the number of guide rods 322 is set to two, and they are located on both sides of the output shaft 3211 and are parallel to the output shaft 3211. A reinforcement 323 is provided on the guide rod 322. The reinforcement 323 is used to connect the two guide rods 322 so that the two guide rods 322 maintain synchronous movement, thereby keeping the welding action of the welding head 31 consistent and facilitating the welding of the connecting piece 53. The output shaft 3211 of the first driving source 321 is connected to the reinforcement 323 to drive the guide rod 322 to move in the up and down directions.

[0063] As attached Figure 3As shown, the limiting member 22 of the fixing mechanism 20 also includes a connecting rod 224, one end of the connecting rod 224 is connected to the upper end of the second pressure member 221, and the other end is connected to the reinforcing member 323. Such an arrangement enables the first pressure member 21, the limiting member 22 and the welding head 31 to maintain synchronous movement. When welding operation is required, the first driving source 321 drives the first pressure member 21, the limiting member 22 and the welding head 31 to move downward synchronously. The first pressure member 21 cooperates with the limiting member 22 to fix the first connecting flange 51 and the second connecting flange 52 to prevent displacement. The welding head 31 performs welding operations on the fixed first connecting flange 51 and the second connecting flange 52 through the connecting member 53, and has good integration.

[0064] In an optional solution, two reinforcement members 323 are provided and are spaced apart in the up-and-down direction to ensure the movement synchronization between the guide rods 322 .

[0065] In an optional solution, the first support plate 61, the second support plate 62 and the guide plate 63 are detachably connected. Optionally, the first support plate 61 and the second support plate 62 are provided with a first screw hole at their upper ends, and the guide plate 63 is provided with a second screw hole, and the first support plate 61, the second support plate 62 and the guide plate 63 are screwed together through the first screw hole and the second screw hole, so as to facilitate assembly and disassembly.

[0066] In one embodiment of the present invention, Figure 1 and attached Figure 5 The unloading mechanism 40 includes a lifting member 41, which is disposed below the supporting platform 11. The lifting member 41 can move in the up and down directions relative to the supporting platform 11. Figure 2 As shown, a discharge hole 113 cooperating with the connecting member 53 is opened in the positioning groove 111, and the position of the discharge hole 113 cooperates with the connecting member 53. The lower end of the connecting member 53 passes through the discharge hole 113, and the lifting member 41 can move upward to contact the lower end of the connecting member 53 and lift the connecting member 53 upward, so that the first connecting flange 51 can be easily removed from the positioning groove 111, so that the operator can remove the welded flange 50 to be processed.

[0067] In one alternative, if Figure 5 As shown, the unloading mechanism 40 includes a second driving source 42, the output shaft of which is connected to the lifting member 41, and is used to drive the lifting member 41 to move in the up and down direction. In one example, two second driving sources 42 are provided, which can synchronously drive the lifting member 41, so that the lifting member 41 moves smoothly, thereby ensuring the unloading efficiency.

[0068] In one alternative, as shown in the attached Figure 5 As shown, the bracket 60 includes a base 64 , the second driving source 42 is mounted on the base 64 , and the first support plate 61 and the second support plate 62 are detachably mounted on the base 64 .

[0069] In one example, the first support plate 61 and the second support plate 62 are detachably connected to the base 64 .

[0070] In one alternative, as shown in the attached Figure 2 As shown, a support plate 114 is provided at the lower end of the supporting platform 11 , and the supporting platform 11 is detachably mounted on the base 64 through the support plate 114 .

[0071] In one alternative, as shown in the attached Figure 1 As shown, the fixing mechanism 20 and the welding mechanism 30 can be provided in plurality and integrated on the bracket 60, so that the main body can process a plurality of flanges 50 to be processed at the same time, thereby improving the welding efficiency.

[0072] The exhaust system flange welding device of the utility model is adopted, wherein the fixing mechanism 20 cooperates with the supporting mechanism 10 to place the flange 50 to be processed and fix the flange 50 to be processed, so that the flange 50 to be processed can be kept in a fixed position during the welding process, thereby preventing the occurrence of poor welding caused by shaking or deflection of the flange 50 to be processed;

[0073] The welding mechanism 30 is used to perform welding operation on the flange 50 to be processed, so as to connect the first connecting flange 51 and the second connecting flange 52 into one body through the connecting piece 53; the unloading mechanism 40 cooperates with the supporting mechanism 10, and when the welding operation is completed, the unloading mechanism 40 is used to separate the flange 50 to be processed from the supporting mechanism 10, so as to facilitate the removal of the flange 50 to be processed from the supporting mechanism 10, thereby improving the unloading efficiency;

[0074] The overall structure of the main body is simple, and the convenience of operation is improved, the welding quality of the flange 50 to be processed is guaranteed, the welding efficiency is improved, and the practicability is strong.

[0075] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust system flange welding device, characterized in that: The invention comprises a main body, wherein the main body comprises a supporting mechanism (10), a fixing mechanism (20), a welding mechanism (30) and a discharge mechanism (40); the supporting mechanism (10) is used for placing a flange to be processed (50); the fixing mechanism (20) is used for fixing the flange to be processed (50) to the supporting mechanism (10); the welding mechanism (30) is used for performing a welding operation on the flange to be processed (50) so that a first connecting flange (51) and a second connecting flange (52) of the flange to be processed (50) are connected via a connecting piece (53); and the discharge mechanism (40) is used for separating the flange to be processed (50) from the supporting mechanism (10).

2. The exhaust system flange welding device according to claim 1, characterized in that: The supporting mechanism (10) comprises a supporting platform (11), the supporting platform (11) is used to place the flange (50) to be processed, a positioning groove (111) is provided on the supporting platform (11), and the positioning groove (111) is arranged in cooperation with the first connecting flange (51) and / or the second connecting flange (52).

3. The exhaust system flange welding device according to claim 2, characterized in that: The supporting mechanism (10) further comprises at least two positioning columns (112), wherein the positioning columns (112) are protrudingly provided on the supporting platform (11) and are located at the outer periphery of the positioning groove (111), and the positioning columns (112) are used to contact the side walls of the first connecting flange (51) and the second connecting flange (52), or only contact the side wall of the second connecting flange (52).

4. The exhaust system flange welding device according to claim 2, characterized in that: The supporting mechanism (10) further comprises a functional plate (12), wherein the functional plate (12) is located above the supporting platform (11) and is detachably connected to the supporting platform (11), and the positioning groove (111) is provided on the functional plate (12), and the positioning groove (111) penetrates the functional plate (12) in the up-down direction.

5. The exhaust system flange welding device according to claim 1, characterized in that: The fixing mechanism (20) comprises a first pressing piece (21), the first pressing piece (21) being provided with an avoidance groove (211) cooperating with a second connecting hole (521) of the second connecting flange (52), the first pressing piece (21) being located above the second connecting flange (52) and being capable of contacting the second connecting flange (52).

6. The exhaust system flange welding device according to claim 5, characterized in that: The fixing mechanism (20) comprises a limiting member (22), the limiting member (22) comprises a second pressing member (221) and a positioning member (222), the area of ​​the orthographic projection of the second pressing member (221) in the up-down direction is larger than the area of ​​the orthographic projection of the positioning member (222) in the up-down direction, the second pressing member (221) is used to contact the upper surface of the second connecting flange (52), the positioning member (222) cooperates with the functional hole (522) of the second connecting flange (52), and the positioning member (222) can be inserted into the functional hole (522).

7. The exhaust system flange welding device according to claim 6, characterized in that: The first pressing member (21) and / or the limiting member (22) are configured to be movable in an up-and-down direction relative to the flange (50) to be processed.

8. The exhaust system flange welding device according to claim 1, characterized in that: The welding mechanism (30) comprises a welding head (31), and the welding head (31) cooperates with the position of the connecting piece (53) and is used for welding the connecting piece (53).

9. The exhaust system flange welding device according to claim 8, characterized in that: The welding mechanism (30) comprises a driving member (32), wherein the driving member (32) is connected to the welding head (31) and is used to drive the welding head (31) to move in an up-down direction.

10. The exhaust system flange welding device according to claim 2, characterized in that: The unloading mechanism (40) comprises a lifting member (41), which is arranged below the supporting platform (11) and can move in the up and down directions relative to the supporting platform (11). A unloading hole (113) cooperating with the connecting member (53) is provided in the positioning groove (111), and the lower end of the connecting member (53) passes through the unloading hole (113). The lifting member (41) can contact the lower end of the connecting member (53) to lift the connecting member (53) upward.

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