A positioning and welding device for irregularly shaped tubes

Abstract

This utility model discloses a positioning and welding device for irregularly shaped tubes, relating to the field of irregularly shaped tube welding technology. Its main technical solution includes a clamping mechanism, a traveling mechanism, and a welding mechanism. The clamping mechanism includes at least a first clamping member and a second clamping member arranged opposite to each other. The first and second clamping members are used to clamp the two ends of the irregularly shaped plate respectively, and the first clamping member is slidably connected to the irregularly shaped plate. The traveling mechanism is connected to the first clamping member and is used to drive the first clamping member to move closer to the second clamping member along the irregularly shaped plate. The welding mechanism is disposed within the traveling mechanism. This aims to reduce the risk of low welding quality of irregularly shaped tubes due to large gaps between the middle parts of two adjacent irregularly shaped plates.

Description

Technical Field

[0001] This utility model relates to the field of welding technology for irregular-shaped tubes, and specifically to a positioning and welding device for irregular-shaped tubes. Background Technology

[0002] Currently, most methods for manufacturing irregularly shaped tubes involve welding multiple irregularly shaped plates end-to-end. However, during the welding process, clamps are typically used to hold and fix the ends of the plates. This often results in a large gap between the two plates, affecting the welding quality of the irregularly shaped tube. Utility Model Content

[0003] The purpose of this invention is to provide a positioning and welding device for irregularly shaped tubes, which solves the problem in the prior art that when welding irregularly shaped plates, there is often a large gap between the middle of the two irregularly shaped plates, which affects the welding quality of the irregularly shaped tubes.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A positioning and welding device for irregularly shaped tubes includes a clamping mechanism, a traveling mechanism, and a welding mechanism. The clamping mechanism includes at least a first clamping member and a second clamping member disposed opposite to each other. The first clamping member and the second clamping member are used to clamp the two ends of the irregularly shaped plate respectively, and the first clamping member is used to slide in connection with the irregularly shaped plate. The traveling mechanism is connected to the first clamping member and is used to drive the first clamping member to move closer to the second clamping member along the irregularly shaped plate. The welding mechanism is disposed on the traveling mechanism.

[0006] A further technical solution is as follows: the walking mechanism includes a guide rail, a driving component, and a connecting plate; the guide rail extends along the direction from the first clamping component to the second clamping component; the connecting plate is slidably disposed on the guide rail, and the connecting plate is connected to both the first clamping component and the welding mechanism; the driving component is connected to the connecting plate.

[0007] A further technical solution is as follows: the first clamping member includes a mounting plate and clamping units; the mounting plate is connected to the connecting plate; a mounting groove is provided on the mounting plate; the mounting groove extends through both sides of the mounting plate along the extension direction of the guide rail; at least two clamping units are arranged around the groove wall of the mounting groove; wherein, each clamping unit is used to clamp different irregular plates respectively, and the welding mechanism is provided between any two adjacent clamping units.

[0008] A further technical solution is as follows: the clamping unit includes a slider and an adjusting screw; the adjusting screw passes through the wall of the mounting groove; the slider is used to slide and connect the irregular plate; the slider is disposed in the mounting groove and is connected to the adjusting screw.

[0009] A further technical solution is that the irregular tube positioning and welding device also includes a welding fume purifier; the welding fume purifier is disposed on the connecting plate, and the air inlet of the welding fume purifier corresponds to the mounting groove.

[0010] A further technical solution is: the irregular tube positioning and welding device further includes a base and a fixing mechanism; the base is disposed below the mounting plate and is arranged in parallel with the guide rail; the fixing mechanism is disposed on the base and corresponds to the groove of the mounting slot.

[0011] A further technical solution is that the fixing mechanism includes at least a first fixing member and a second fixing member; the first fixing member and the second fixing member are distributed at both ends of the base.

[0012] A further technical solution is as follows: the base includes a first base body and a second base body; the first base body and the second base body are arranged sequentially along the direction of the guide rail; the first base body is located below the mounting plate; the first fixing member is disposed on the first base body; the second base body is located at the end of the guide rail away from the mounting plate; the second fixing member and the second clamping member are both disposed on the second base body.

[0013] A further technical solution is that the first fixing member is slidably disposed on the first seat, and the first fixing member is used to slide along the first seat towards the second seat.

[0014] A further technical solution is: the first fastener includes a first fastening screw and a second fastening screw; the first fastening screw and the second fastening screw are disposed opposite to each other on both sides of the first base.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] As the first clamping member moves towards the second clamping member, it sequentially clamps various points on the shaped plate. Simultaneously, the welding mechanism performs inter-plate welding at the clamping positions of the first clamping member on the shaped plate. This aims to reduce the risk of low welding quality in the shaped tube due to a large gap between the middle of two adjacent shaped plates. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a non-circular tube positioning and welding device in this embodiment;

[0018] Figure 2 This is a left-side structural topology diagram of a non-shaped tube positioning and welding device in this embodiment;

[0019] Figure 3This is a right-side structural topology diagram of a non-circular tube positioning and welding device in this embodiment.

[0020] The attached diagram shows the markings and corresponding component names:

[0021] 1-First clamping component; 111-Mounting plate; 112-Clamping unit; 1121-Slider; 1122-Adjusting screw; 2-Second clamping component; 3-Guide rail; 4-Driver; 5-Connecting plate; 6-Welding mechanism; 7-Mounting groove; 8-Welding fume purifier; 9-First base; 10-Second base; 11-Second fixing component;

[0022] 12-First fastener; 121-First fastening screw; 122-Second fastening screw;

[0023] 13-Irregularly shaped plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Example 1: This example provides a positioning and welding device for irregularly shaped tubes, such as... Figures 1-3 As shown, the device includes a clamping mechanism, a traveling mechanism, and a welding mechanism 6. The clamping mechanism includes at least a first clamping member 1 and a second clamping member 2 arranged opposite to each other. The first clamping member 1 and the second clamping member 2 are used to clamp the two ends of the irregular plate 13 respectively, and the first clamping member 1 is used to slide in connection with the irregular plate 13. The traveling mechanism is connected to the first clamping member 1, and the traveling mechanism is used to drive the first clamping member 1 to move closer to the second clamping member 2 along the irregular plate 13. The welding mechanism 6 is disposed on the traveling mechanism.

[0026] For example, in implementation, the clamping mechanism includes a first clamping member 1 and a second clamping member 2. The first clamping member 1 and the second clamping member 2 are arranged opposite to each other. Both the first clamping member 1 and the second clamping member 2 can be devices with independent clamping functions, such as clamps, pressure blocks, pneumatic / hydraulic cylinders, etc.

[0027] The first clamping member 1 is used to clamp one end of the irregularly shaped plate 13. The portion of the irregularly shaped plate 13 clamped by the first clamping member 1 is referred to as the first clamping portion. At least two irregularly shaped plates 13 are clamped on the first clamping member 1, and the clamping force of the first clamping member 1 acts on the first clamping portion of the irregularly shaped plate 13 so that the first clamping portions of two adjacent irregularly shaped plates 13 are approximately in contact with each other. Here, "approximately in contact" means reaching a distance that meets the welding requirements between the two irregularly shaped plates 13.

[0028] The second clamping member 2 is used to clamp the other end of the irregular plate 13 on the first clamping member 1. The part of the irregular plate 13 clamped by the second clamping member 2 is referred to as the second clamping part. The clamping force of the second clamping member 2 is applied to the second clamping part of the irregular plate 13 so that the second clamping parts of two adjacent irregular plates 13 are approximately in contact with each other.

[0029] The first clamping member 1 is slidably connected to the irregular plate 13. When the first clamping member 1 moves closer to the second clamping member 2 along the irregular plate 13, the clamping force of the first clamping member 1 drives the irregular plate 13 to fit together in sequence.

[0030] The walking mechanism is connected to the first clamping member 1 by welding, screwing or other means, so that the walking mechanism can drive the first clamping member 1 to move closer to the second clamping member 2 along the irregular plate 13.

[0031] The welding mechanism 6 can be a welding torch, laser welding head, or other similar device. The welding mechanism 6 is positioned to correspond to the side of the first clamping portion of two adjacent irregularly shaped plates 13 that is close to each other, allowing the welding mechanism 6 to weld the adjacent irregularly shaped plates 13 at this close side. Furthermore, the welding mechanism 6 is connected to the traveling mechanism via welding, screwing, or other methods, enabling it to move along the irregularly shaped plate 13 towards the second clamping member 2 under the drive of the traveling mechanism, thereby achieving axial upward welding of the irregularly shaped plate 13.

[0032] During use, at least two irregularly shaped plates 13 are first fixedly clamped at one end onto the second clamping member 2, and the other end of each irregularly shaped plate 13 is slidably clamped onto the first clamping member 1. Next, the welding mechanism 6 is operated. At this time, the welding mechanism 6 welds the first clamping portions of two adjacent irregularly shaped plates 13 at their respective points of proximity. Simultaneously, the traveling mechanism is operated to drive the first clamping member 1 along the irregularly shaped plate 13 toward the second clamping member 2. As the first clamping member 1 moves toward the second clamping member 2 along the irregularly shaped plate 13, the welding mechanism 6 simultaneously moves toward the second clamping member 2 along the irregularly shaped plate 13, completing the welding between the two adjacent irregularly shaped plates 13. Through this mechanism, as the first clamping member 1 moves toward the second clamping member 2, the first clamping member 1 clamps various points on the irregularly shaped plate 13 sequentially. Simultaneously, the welding mechanism 6 simultaneously welds the irregularly shaped plates 13 at the clamping positions of the first clamping member 1 on the irregularly shaped plate 13. The aim is to reduce the risk of lower welding quality of the irregular tube due to the large gap between the middle of two adjacent irregular plates 13.

[0033] Example 2: Based on Example 1 above, in this example, as follows... Figure 1As shown, the walking mechanism includes a guide rail 3, a driving component 4, and a connecting plate 5; the guide rail 3 extends along the direction from the first clamping component 1 to the second clamping component 2; the connecting plate 5 is slidably disposed on the guide rail 3, and the connecting plate 5 is connected to both the first clamping component 1 and the welding mechanism 6; the driving component 4 is connected to the connecting plate 5.

[0034] For example, in the implementation process, the above-mentioned walking mechanism includes a guide rail 3, a drive component 4, and a connecting plate 5.

[0035] The guide rail 3 is located on one side of the second clamping member 2, and the guide rail 3 extends along the direction from the first clamping member 1 to the second clamping member 2.

[0036] The connecting plate 5 is slidably mounted on the guide rail 3 so that it can slide along the guide rail 3. The connecting plate 5 is connected to the first clamping member 1 and the welding mechanism 6 by means of welding, screwing, or other methods. This ensures that when the connecting plate 5 slides along the guide rail 3 toward the second clamping member 2, the first clamping member 1 and the welding mechanism 6 can slide toward the second clamping member 2 simultaneously.

[0037] The driving component 4 can be driven by a cylinder, hydraulic cylinder, servo motor + lead screw, or other methods. The driving component 4 is mounted on the guide rail 3 via welding or screw fixing, and its output shaft is connected to the connecting plate 5. This ensures that when the driving component 4 is operating, it can drive the connecting plate 5 to slide along the guide rail 3 towards the second clamping member 2. The aim is to provide a guiding path for the connecting plate 5 via the guide rail 3, thereby reducing the risk of offset or wobbling of the connecting plate 5, and ultimately improving the straightness and stability of the first clamping member 1 and the welding mechanism 6 during movement.

[0038] Example 3: Based on Example 2 above, in this example, as follows... Figure 3 As shown, the first clamping member 1 includes a mounting plate 111 and a clamping unit 112; the mounting plate 111 is connected to the connecting plate 5; the mounting plate 111 has a mounting groove 7; the mounting groove 7 extends through both sides of the mounting plate 111 along the extension direction of the guide rail 3; at least two clamping units 112 are arranged around the groove wall of the mounting groove 7; wherein, each clamping unit 112 is used to clamp different irregular plates 13 respectively, and the welding mechanism 6 is provided between any two adjacent clamping units 112.

[0039] For example, in implementation, the first clamping member 1 includes a mounting plate 111 and a clamping unit 112.

[0040] Mounting plate 111 is connected to connecting plate 5 by welding, screwing or other methods. Mounting plate 111 has mounting groove 7, which runs through both sides of mounting plate 111 along the direction of guide rail 3 (i.e., the axial direction of irregular plate 13) so that irregular plate 13 can pass through.

[0041] At least two clamping units 112 are provided, and each clamping unit 112 is distributed around the wall of the mounting groove 7. Each clamping unit 112 clamps one irregular plate 13, so that two adjacent clamping units 112 can drive two adjacent irregular plates 13 to move closer to each other and approximately fit together. A welding mechanism 6 is provided between any two adjacent clamping units 112.

[0042] For example, the mounting slot 7 on the mounting plate 111 faces downwards, and three clamping units 112 are provided, distributed between the bottom of the mounting slot 7 and the two slot walls. Two welding mechanisms 6 are provided, one welding mechanism 6 is located between the bottom of the slot and one slot wall, and the other welding mechanism 6 is located between the bottom of the slot and the other slot wall.

[0043] In use, there are three irregularly shaped plates 13, which are clamped onto three clamping units 112 respectively, so that the three irregularly shaped plates 13 form a U-shaped structure with the opening facing upwards. One welding mechanism 6 is located between one irregularly shaped plate 13 and an irregularly shaped plate 13 adjacent to one side of that plate, and another welding mechanism 6 is located between one irregularly shaped plate 13 and an irregularly shaped plate 13 adjacent to the other side of that plate. The aim is to simultaneously weld multiple irregularly shaped plates 13 forming the irregularly shaped tube, thereby improving welding efficiency.

[0044] Example 4: Based on Example 3 above, in this example, as... Figure 3 As shown, the clamping unit 112 includes a slider 1121 and an adjusting screw 1122; the adjusting screw 1122 passes through the groove wall of the mounting groove 7; the slider 1121 is used to slidably connect the irregular plate 13; the slider 1121 is disposed in the mounting groove 7 and is connected to the adjusting screw 1122.

[0045] For example, in implementation, the clamping unit 112 includes a slider 1121 and an adjusting screw 1122.

[0046] The adjusting screw 1122 passes through the wall or bottom of the mounting groove 7 and is screwed to the mounting plate 111. This ensures that when the adjusting screw 1122 is rotated, it can move closer to or further away from the axis of the mounting groove 7.

[0047] The slider 1121 is connected to the adjusting screw 1122 through shaft hole connection, bearing connection, etc., and the slider 1121 is located in the mounting groove 7.

[0048] During use, the irregularly shaped plate 13 is inserted into the mounting groove 7, and the slider 1121 is slidably connected to the dovetail groove on the irregularly shaped plate 13. Next, the adjusting screw 1122 is rotated to bring the irregularly shaped plates 13 closer together until they are approximately in contact. The aim is to achieve a sliding connection between the slider 1121 and the irregularly shaped plate 13, and to allow the slider 1121 to move with the irregularly shaped plate 13 even when clamped.

[0049] In one optional embodiment, the second clamping member 2 has the same structure as the first clamping member 1. During use, to reduce the risk of the irregularly shaped plate 13 sliding off the second clamping member 2 when the first clamping member 1 slides towards the second clamping member 2, the clamping force between the slider 1121 of the second clamping member 2 and the irregularly shaped plate 13 can be increased by adjusting the screw 1122 of the second clamping member 2.

[0050] Example 5: Based on Example 3 or Example 4 above, in this example, as... Figure 1 As shown, the irregular tube positioning and welding device also includes a welding fume purifier 8; the welding fume purifier 8 is disposed on the connecting plate 5, and the air inlet of the welding fume purifier 8 corresponds to the mounting groove 7.

[0051] For example, in implementation, the irregular tube positioning welding device also includes a welding fume purifier 8. The welding fume purifier 8 is used to purify fumes and dust generated during welding, cutting, grinding, and other processes, as well as to recover rare metals and valuable materials. It can purify a large number of fine metal particles suspended in the air that are harmful to the human body. It features high purification efficiency, low noise, flexible use, and small footprint. The welding fume purifier 8 is connected to the connecting plate 5 by screw fixing, snap-fit, or other methods, and the air inlet of the welding fume purifier 8 is aligned with the position of the mounting groove 7, i.e., the welding operation area of ​​the welding machine mechanism. The aim is to effectively remove harmful fumes and fine particulate matter released during welding, thereby providing a cleaner working space and reducing the risk of occupational diseases.

[0052] Example 6: Based on Example 3 above, in this example, as follows... Figure 1 As shown, the irregular tube positioning and welding device also includes a base and a fixing mechanism; the base is disposed below the mounting plate 111 and is arranged in parallel with the guide rail 3; the fixing mechanism is disposed on the base and corresponds to the slot of the mounting groove 7.

[0053] For example, in the implementation process, the irregular tube positioning and welding device also includes a base and a fixing mechanism.

[0054] The base is positioned below the mounting plate 111 and is arranged side by side with the guide rail 3.

[0055] The fixing mechanism can be a device with independent clamping function, such as a clamp, a pressure block, or a pneumatic / hydraulic cylinder. The fixing mechanism is connected to the upper surface of the base by welding, screwing, or other methods, and the fixing mechanism corresponds to the slot of the mounting groove 7.

[0056] During use, the fixing mechanism clamps and fixes the portion of the irregularly shaped plate 13 extending out of the mounting groove 7 from the bottom of the mounting groove 7 towards the opening of the mounting groove 7. This aims to reduce the risk of the irregularly shaped plate 13 sliding off the second clamping member 2 when the first clamping member 1 slides towards the second clamping member 2.

[0057] Example 7: Based on Example 6 above, in this example, as... Figure 1 As shown, the fixing mechanism includes at least a first fixing member 12 and a second fixing member 11; the first fixing member 12 and the second fixing member 11 are distributed at both ends of the base.

[0058] For example, in implementation, the aforementioned fixing mechanism includes at least a first fixing member 12 and a second fixing member 11. Both the first fixing member 12 and the second fixing member 11 can be devices with independent clamping functions, such as clamps, pressure blocks, or pneumatic / hydraulic cylinders. The first fixing member 12 and the second fixing member 11 are respectively connected to both ends of the sub-base by welding, screwing, or other methods.

[0059] During use, the first fixing member 12 and the second fixing member 11 are used to clamp and fix the two ends of the irregular plate 13 respectively. This is intended to further reduce the risk of the irregular plate 13 sliding off the second fixing member 2 when the first clamping member 1 slides toward the second clamping member 2.

[0060] Example 8: In actual production, the irregularly shaped plate 13 is usually quite long. Therefore, in order to reduce the length of the material used for the base, based on Example 7 above, in this example, as... Figure 1 As shown, the base includes a first base body 9 and a second base body 10; the first base body 9 and the second base body 10 are arranged sequentially along the direction of the guide rail 3; the first base body 9 is located below the mounting plate 111; the first fixing member 12 is disposed on the first base body 9; the second base body 10 is located at the end of the guide rail 3 away from the mounting plate 111; the second fixing member 11 and the second clamping member 2 are both disposed on the second base body 10.

[0061] For example, in implementation, the base includes a first base 9 and a second base 10. Both the first base 9 and the second base 10 are located below the mounting plate 111, and are arranged sequentially along the length of the guide rail 3. The first fixing member 12 is connected to the upper surface of the first base 9 by means of screwing, welding, or other methods. The second fixing member 11 and the second clamping member 2 are connected to the upper surface of the second base 10 by means of welding, screwing, or other methods. The base adopts a segmented design including the first base 9 and the second base 10 to reduce the amount of base material used.

[0062] Example 9: In actual production, the first base 9 and the second base 10 are usually fixed in their respective processing areas. When it is necessary to weld irregularly shaped plates 13 of different lengths to form irregularly shaped tubes of different lengths, there may be a situation where the first fixing member 12 or the second fixing member 11 has difficulty clamping the irregularly shaped plate 13. Therefore, based on Example 8 above, in this example, as... Figure 1 As shown, the first fixing member 12 is slidably disposed on the first seat 9, and the first fixing member 12 is used to slide along the first seat 9 toward the direction of approaching the second seat 10.

[0063] For example, during implementation, the first fixing member 12 is slidably connected to the first base 9 through a structure such as a slide rail or a slide groove, and the first fixing member 12 can slide along the first base 9 toward / away from the second base 10.

[0064] During use, the first fixing member 12 is slid along the first base 9 towards the second base 10 to shorten the distance between the first fixing member 12 and the second fixing member 11. This is intended to clamp and fix the shorter irregular plate 13.

[0065] The second fixing member 11 is slid along the first base 9 in a direction away from the second base 10. This increases the distance between the first fixing member 12 and the second fixing member 11, aiming to achieve the purpose of clamping and fixing the longer irregular plate 13.

[0066] Example 10: Based on Example 8 or Example 9 above, in this example, as follows... Figure 3 As shown, the first fastener 12 includes a first fastening screw 121 and a second fastening screw 122; the first fastening screw 121 and the second fastening screw 122 are disposed opposite to each other on both sides of the first base 9.

[0067] For example, in implementation, the first fastener 12 includes a first fastening screw 121 and a second fastening screw 122. The first fastening screw 121 and the second fastening screw 122 are disposed opposite to each other on both sides of the first base 9, and both the first fastening screw 121 and the second fastening screw 122 are screwed onto the side wall of the second base 10.

[0068] During use, the distance between the first fastening screw 121 and / or the second fastening screw 122 can be adjusted by rotating the first fastening screw 121 and / or the second fastening screw 122. This is intended to achieve the purpose of clamping the irregular plate 13 using the first fastening screw 121 and the second fastening screw 122.

[0069] In one optional embodiment, the structure of the second fastener 11 is the same as that of the first fastener 12.

[0070] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A profiled tube tack welding device, characterized by Comprise: Clamping mechanism, the clamping mechanism at least includes first clamping piece (1) and second clamping piece (2) are oppositely arranged;The first clamping piece (1) and second clamping piece (2) are used to clamp the two ends of the special-shaped plate (13) respectively, and the first clamping piece (1) is used to be connected with the special-shaped plate (13) sliding; Walking mechanism, the walking mechanism is connected with the first clamping piece (1), and the walking mechanism is used to drive the first clamping piece (1) to approach the second clamping piece (2) along the special-shaped plate (13); Welding mechanism (6), the welding mechanism (6) is arranged in the walking mechanism. 2.The special-shaped tube positioning and welding device according to claim 1, wherein: The walking mechanism comprises a guide rail (3), a driving member (4) and a connecting plate (5); The guide rail (3) extends in the direction of the first clamping piece (1) to the second clamping piece (2); The connecting plate (5) is slidingly arranged on the guide rail (3), and the connecting plate (5) is connected with the first clamping piece (1) and the welding mechanism (6); The driving member (4) is connected with the connecting plate (5). 3.The special-shaped tube positioning and welding device according to claim 2, wherein: The first clamping piece (1) comprises a mounting plate (111) and a clamping unit (112); The mounting plate (111) is connected to the connecting plate (5); An installation groove (7) is formed in the mounting plate (111); The installation groove (7) penetrates through both sides of the mounting plate (111) in the extension direction of the guide rail (3); At least two clamping units (112) are arranged around the groove wall of the installation groove (7); Each clamping unit (112) is used to clamp a different special-shaped plate (13), and the welding mechanism (6) is arranged between any two adjacent clamping units (112). 4.The special-shaped tube positioning and welding device according to claim 3, wherein: The clamping unit (112) comprises a sliding block (1121) and an adjusting screw (1122); The adjusting screw (1122) penetrates the groove wall of the installation groove (7); The sliding block (1121) is used to slidingly connect the special-shaped plate (13); The sliding block (1121) is arranged in the installation groove (7), and the sliding block (1121) is connected to the adjusting screw (1122). 5.The special-shaped tube positioning and welding device according to any one of claims 3 or 4, further comprising a welding fume purifier (8); The welding fume purifier (8) is arranged on the connecting plate (5), and the air inlet of the welding fume purifier (8) corresponds to the installation groove (7). 6.The special-shaped tube positioning and welding device according to claim 3, further comprising a base and a fixing mechanism; The base is arranged below the mounting plate (111), and the base is arranged parallel to the guide rail (3); The fixing mechanism is arranged on the base, and the fixing mechanism corresponds to the slot of the installation groove (7). 7.The special-shaped tube positioning and welding device according to claim 6, wherein: ​ ​ The fixing mechanism includes at least a first fixing member (12) and a second fixing member (11); The first fixing member (12) and the second fixing member (11) are respectively disposed at both ends of the base.

8. The non-circular tube positioning and welding device according to claim 7, characterized in that: The base includes a first seat body (9) and a second seat body (10); The first seat (9) and the second seat (10) are arranged sequentially along the direction of the extension of the guide rail (3); The first base (9) is located below the mounting plate (111); The first fixing member (12) is disposed on the first base (9); The second seat (10) is located at the end of the guide rail (3) away from the mounting plate (111); The second fixing member (11) and the second clamping member (2) are both disposed on the second base body (10).

9. The non-circular tube positioning and welding device according to claim 8, characterized in that: The first fixing member (12) is slidably disposed on the first seat (9), and the first fixing member (12) is used to slide along the first seat (9) toward the second seat (10).

10. The non-circular tube positioning and welding device according to claim 8 or 9, characterized in that: The first fastener (12) includes a first fastening screw (121) and a second fastening screw (122); The first fastening screw (121) and the second fastening screw (122) are disposed opposite to each other on both sides of the first base (9).

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