Welding positioning tool and welding device

Abstract

The utility model belongs to the technical field of laser welding, and particularly relates to a welding positioning tool and a welding device.The welding positioning tool is used for being matched with a welding mechanism to weld a to-be-welded piece, the welding positioning tool comprises a rack, a first driving piece, a clamping structure and a fixing structure rotationally arranged on the rack, and the fixing structure is used for fixing the to-be-welded piece; the to-be-welded part is provided with a plurality of welding faces distributed around a preset axis, the first driving part is used for driving the fixing structure to rotate around the preset axis so that one welding face can face the welding mechanism, and the clamping structure has a first state for clamping and fixing the fixing structure or a second state for loosening the fixing structure. When the clamping structure is in the first state, the welding mechanism welds the to-be-welded part, and when the clamping structure is in the second state, the fixing structure can be driven by the first driving part to rotate. The utility model can solve the problem of how to improve the welding efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding, and in particular relates to a welding positioning tool and a welding device. Background Art

[0002] When welding a workpiece, it is usually necessary to fix the workpiece with a fixture and then use a welding head to weld the workpiece. Since each workpiece usually has more than one welding position, the workpiece needs to be adjusted in angle during the welding process so that the welding head can smoothly complete the accurate welding of each position of the workpiece. The existing welding positioning fixture can usually only be clamped once to weld one surface, and argon fluorine welding is used for manual spot welding. After one surface is welded, the workpiece is moved, turned over, and clamped again, and then the other surface of the workpiece is welded, which greatly reduces the efficiency of welding. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a welding positioning tool and a welding device, aiming to solve the problem of how to improve welding efficiency.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] In a first aspect, a welding positioning tool is provided, which is used to cooperate with a welding mechanism to weld a workpiece to be welded. The welding positioning tool includes a frame, a first driving member, a clamping structure, and a fixed structure rotatably arranged on the frame. The fixed structure is used to fix the workpiece to be welded, and the workpiece to be welded has a plurality of welding surfaces distributed around a preset axis. The first driving member is used to drive the fixed structure to rotate around the preset axis so that one of the welding surfaces faces the welding mechanism. The clamping structure has a first state of clamping and fixing the fixed structure or a second state of releasing the fixed structure. When the clamping structure is in the first state, the welding mechanism welds the workpiece to be welded. When the clamping structure is in the second state, the fixed structure can be driven by the first driving member to rotate.

[0006] In some embodiments, a limiting groove for limiting the workpiece to be welded is provided on the surface of the fixed structure, and the workpiece to be welded is arranged in the limiting groove. A positioning component is also provided on the surface of the fixed structure, and the positioning component is used to fix the workpiece to be welded.

[0007] In some embodiments, the fixed structure is a plate-like structure, the fixed structure includes a first surface and a second surface opposite to each other, the workpiece to be welded is fixed to the first surface, the fixed structure is provided with a through groove running through the first surface and the second surface, the workpiece to be welded corresponds to the through groove, the workpiece to be welded includes two opposite welding surfaces, one of which is arranged in the same direction as the first surface, and the other welding surface exposes the second surface through the through groove.

[0008] In some embodiments, the fixing structure fixes a plurality of parts to be welded, and welding positions between the plurality of parts to be welded all expose the first surface or the second surface.

[0009] In some embodiments, the positioning component is one or more of a positioning pin or a quick clamp.

[0010] In some embodiments, the holding structure includes a second driving member and a support rod slidably disposed on a frame, wherein the support rod is connected to an output end of the second driving member, and the second driving member is used to drive the support rod to reciprocate along a preset direction so that the support rod extends toward the bottom of the fixed structure and supports the fixed structure or is separated from the fixed structure.

[0011] In some embodiments, the frame includes a first base body and a second base body spaced apart from each other, the fixed structure is arranged between the first base body and the second base body, both ends of the fixed structure are rotatably connected to the first base body and the second base body respectively through a rotating shaft, the first driving member is arranged on the side of the first base body, and the fixed structure passes through the first base body toward the rotating shaft of the first driving member and is connected to the rotation output end of the first driving member.

[0012] In some embodiments, the frame also includes a third base body, and the third base body, the second base body and the first base body are arranged in sequence along the preset direction. The second driving member is fixed to the third base body, and the clamping structure is a support rod, which is movably passed through the second base body. When the fixed structure stops rotating, the second driving member drives the support rod to extend toward the bottom of the fixed structure to support the fixed structure.

[0013] In some embodiments, the frame includes a working platform and a plurality of supporting base plates detachably mounted on the working platform, and each of the supporting base plates is provided with the first driving member, the clamping structure and the fixing structure.

[0014] In a second aspect, a welding device is provided, which includes the above-mentioned welding positioning tool. The welding device also includes a welding mechanism, and the welding mechanism is arranged beside the welding positioning tool.

[0015] The welding positioning tool provided by the present application has a fixed structure for clamping and fixing the workpiece to be welded, and a first driving member is used to drive the fixed structure to rotate around a preset axis, so that multiple welding surfaces of the workpiece to be welded are respectively facing the welding structure. When the fixed structure is rotated into place, the fixed structure can be locked by the clamping structure, and finally welding can be performed. Therefore, the welding positioning tool of the present application can realize welding of multiple surfaces with one clamping, avoiding multiple clamping and multiple handling, and the entire process is automatically coordinated and operated by the fixed structure, the clamping structure and the first driving member, etc., so the degree of automation is greatly improved, and the welding efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the welding equipment provided in the embodiment of the present application;

[0018] Figure 2 It is a partial structural schematic diagram of the welding positioning tool provided in an embodiment of the present application;

[0019] Figure 3 This is a structural schematic diagram of one viewing angle of the fixed structure provided in an embodiment of the present application;

[0020] Figure 4 It is a structural schematic diagram of another perspective of the fixed structure provided in an embodiment of the present application.

[0021] Among them, the reference numerals in the figure are:

[0022] 10. Frame; 11. First base body; 12. Second base body; 13. Third base body; 14. Fourth base body; 15. Working platform; 16. Support base plate; 17. Press block; 20. Fixing structure; 21. Limiting groove; 221. Positioning pin; 222. Quick clamp; 23. First surface; 24. Second surface; 25. Through groove; 30. First driving member; 50. Holding structure; 51. Support rod; 52. Second driving member; 60. Connecting plate; 200. Part to be welded; 210. First part to be welded; 220. Second part to be welded; 230. Third part to be welded; 240. Welding surface; 300. Welding mechanism. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] See also Figures 1 to 4The embodiment of the present application provides a welding positioning tool for cooperating with a welding mechanism 300 to weld a workpiece 200 to be welded. The welding positioning tool includes a frame 10, a first driving member 30, a holding structure 50, and a fixed structure 20 rotatably arranged on the frame 10. The fixed structure 20 is used to fix the workpiece 200 to be welded. The workpiece 200 to be welded has a plurality of welding surfaces 240 facing different directions respectively. The first driving member 30 is used to drive the fixed structure 20 to rotate along the rotation axis so that one of the welding surfaces 240 faces the welding mechanism 300. The holding structure 50 has a first state of holding and fixing the fixed structure 20 or a second state of releasing the fixed structure 20. When the holding structure 50 is in the first state, the welding mechanism 300 welds the workpiece 200 to be welded. When the holding structure 50 is in the second state, the fixed structure 20 can be driven by the first driving member 30 to rotate.

[0028] The welding positioning tooling provided in the present application comprises a fixed structure 20 for clamping and fixing the workpiece 200 to be welded, and a first driving member 30 for driving the fixed structure 20 to rotate around a preset axis, so that the multiple welding surfaces 240 of the workpiece 200 to be welded are respectively facing the welding structure. When the fixed structure 20 is rotated into place, the fixed structure 20 can be locked by the clamping structure 50, and finally welding can be performed. Therefore, the welding positioning tooling of the present application can realize welding of multiple surfaces with one clamping, avoiding multiple clamping and multiple handling, and the entire process is automatically coordinated and operated by the fixed structure 20, the clamping structure 50 and the first driving member 30, etc., so the degree of automation is greatly improved, and the welding efficiency is greatly improved.

[0029] Preferably, a limiting groove 21 for limiting the workpiece 200 to be welded is provided on the surface of the fixing structure 20 , and the workpiece 200 to be welded is arranged in the limiting groove 21 . A positioning component is also provided on the surface of the fixing structure 20 , and the positioning component is used to fix the workpiece 200 to be welded.

[0030] Since the workpiece 200 to be welded can be of various shapes, the shape of the limiting groove 21 can be adapted to the shape of the workpiece 200 to be welded. When the workpiece 200 to be welded is accommodated in the limiting groove 21, the limiting groove 21 has a better limiting effect on the workpiece 200 to be welded, making the fixation of the workpiece 200 to be welded more secure.

[0031] In some embodiments, the positioning assembly may include a positioning pin 221. Specifically, the positioning pin 221 is disposed on the surface of the fixed structure 20. A connection hole is disposed on the workpiece 200 to be welded. The positioning pin 221 passes through the connection hole, thereby limiting the position of the workpiece 200 to be welded. It can be understood that a plurality of connection holes may be disposed on the workpiece 200 to be welded. Accordingly, a plurality of positioning pins 221 may be disposed on the surface of the fixed structure 20. The plurality of positioning pins 221 and the plurality of connection holes correspond to each other and cooperate with each other, which can further improve the limiting effect on the workpiece 200 to be welded.

[0032] In some embodiments, the positioning assembly may include a quick clamp 222, which is disposed on the surface of the fixed structure 20. The quick clamp 222 may press down the surface of the workpiece 200 to be welded, thereby positioning the workpiece 200. It is understandable that the positioning assembly of the present application may include both a positioning pin 221 and a quick clamp 222, and may use a variety of positioning members for positioning, thereby improving the positioning effect. In other possible implementations, the positioning assembly may also include a positioning column or a snap-fit ​​member, etc., and the present application does not limit the specific type of the positioning assembly.

[0033] In some embodiments, the fixed structure 20 is a plate-like structure, and the fixed structure 20 includes a first surface 23 and a second surface 24 opposite to each other. The workpiece 200 to be welded is fixed to the first surface 23. The fixed structure 20 is provided with a through groove 25 that passes through the first surface 23 and the second surface 24. The workpiece 200 to be welded corresponds to the through groove 25. The workpiece 200 to be welded includes two opposite welding surfaces 240, one of which is arranged in the same direction as the first surface 23, and the other welding surface 240 exposes the second surface 24 through the through groove 25.

[0034] It can be understood that the two welding surfaces 240 of the workpiece 200 to be welded are facing away from each other. When welding is performed on one of the welding surfaces 240 of the workpiece 200, the welding surface 240 faces the welding mechanism 300 and corresponds to the welding head of the welding mechanism 300. When the welding of the welding surface 240 is completed, the first driving member 30 drives the fixed structure 20 to rotate 180° along the rotation axis. At this time, the other welding surface 240 facing away from the welding surface 240 is flipped to face upward and exposed through the through groove 25, so that the welding head of the welding mechanism 300 can perform welding operations normally.

[0035] In some embodiments, a plurality of workpieces 200 to be welded are fixed to the fixed structure 20 , and the welding positions between the plurality of workpieces 200 to be welded all expose the first surface 23 or the second surface 24 .

[0036] The workpiece 200 to be welded may be in various shapes, such as a long strip, a disk or an irregular shape. A plurality of workpieces 200 to be welded may also be welded to different positions. For example, in a specific embodiment, the workpiece 200 to be welded may include a first workpiece 210 to be welded, a second workpiece 220 to be welded and a third workpiece 230 to be welded, wherein the first workpiece 210 to be welded and the second workpiece 220 to be welded need to be welded, and the two welding portions of the second workpiece 220 to be welded need to be welded to the two welding surfaces 240 opposite to the first workpiece 210, respectively. Therefore, the first workpiece 210 to be welded may be passed through the two welding portions, and when the first surface 23 faces upward, the first workpiece 210 to be welded 230 0 also faces upward, and one of the welding parts of the second workpiece 220 to be welded is superimposed on the welding surface 240. At this time, the welding head can weld the welding surface 240 and the welding part. After the welding is completed, the first driving member 30 drives the fixed structure 20 to rotate 180° along the rotation axis, and the second surface 24 is flipped upward. At this time, the other welding surface 240 opposite to the welded welding surface 240 is flipped to face upward and exposed through the through groove 25, and the other welding part of the second workpiece 220 to be welded is superimposed on it. At this time, the welding head can weld the welding surface 240 facing upward and the welding part facing upward.

[0037] In some embodiments, the holding structure 50 includes a second driving member 52 and a support rod 51 slidably disposed on the frame 10, the support rod 51 is connected to the output end of the second driving member 52, and the second driving member 52 is used to drive the support rod 51 to reciprocate along a preset direction so that the support rod 51 extends to the bottom of the fixed structure 20 and supports the fixed structure 20 or separates from the fixed structure 20.

[0038] In the present application, the preset direction is a direction parallel to the horizontal plane, and when the welding positioning tool positions the workpiece 200 to be welded, the welding head of the welding mechanism 300 is located at the top of the workpiece 200 to be welded, and the preset axis direction is parallel to the preset direction.

[0039] In some embodiments, the frame 10 includes a first base body 11 and a second base body 12 that are spaced apart from each other, a fixed structure 20 is disposed between the first base body 11 and the second base body 12, two ends of the fixed structure 20 are rotatably connected to the first base body 11 and the second base body 12 respectively through a rotating shaft, a first driving member 30 is disposed on the side of the first base body 11, and the rotating shaft of the fixed structure 20 toward the first driving member 30 passes through the first base body 11 and is connected to the rotation output end of the first driving member 30.

[0040] Specifically, the first driving member 30 may be a rotary cylinder, the frame 10 further includes a fourth seat body 14 spaced apart from the first seat body 11, and the first driving member 30 is mounted on the fourth seat body 14. In addition, bearings may be provided on the first seat body 11 and the second seat body 12, and the bearings are sleeved on the rotating shafts at both ends of the fixed structure 20, thereby improving the smoothness of the rotation of the fixed structure 20.

[0041] In some embodiments, the frame 10 also includes a third base body 13, and the third base body 13, the second base body 12 and the first base body 11 are arranged in sequence along a preset direction. The second driving member 52 is fixed to the third base body 13, and the support rod 51 is movably penetrated through the second base body 12. When the fixed structure 20 is rotated into place, the second driving member 52 drives the support rod 51 to extend to the bottom of the fixed structure 20 to support the fixed structure 20, thereby preventing the fixed structure 20 from rotating during welding.

[0042] Specifically, a connecting plate 60 is further connected between the second driving member 52 and the clamping structure 50. The connecting plate 60 is connected to the output end of the second driving member 52. The connecting plate 60 can move between the third base body 13 and the second base body 12. A plurality of supporting rods 51 can be connected to the connecting plate 60. The plurality of supporting rods 51 are spaced apart and arranged in parallel. The plurality of supporting rods 51 have the same height. Therefore, the plurality of supporting rods 51 can jointly support the bottom of the fixed structure 20, thereby keeping the fixed structure 20 balanced. The second driving member 52 drives the connecting plate 60 to move and drives the supporting rods 51 to move. Since the plurality of supporting rods 51 are all connected to the connecting plate 60, the plurality of supporting rods 51 can be moved synchronously.

[0043] In the present application, the number of support rods 51 is set to two. Of course, in other possible implementations, the number of support rods 51 can be set to three, four, five or more. The present application does not make a sole limitation on the number of support rods 51.

[0044] In some embodiments, the frame 10 includes a working platform 15 and a plurality of supporting base plates 16 detachably mounted on the working platform 15, each supporting base plate 16 is provided with a first driving member 30, a clamping structure 50 and a fixing structure 20, so that the fixing structure 20 on each supporting base plate 16 can fix the same workpiece 200 to be welded, and the fixing structure 20 on each supporting base plate 16 can be turned synchronously, that is, each workpiece 200 to be welded on each supporting base plate 16 has the same welding surface 240 facing upward each time welding is performed, and the welding mechanism 300 can weld the workpiece 200 to be welded on each supporting base plate 16 respectively, thereby improving the welding efficiency. Specifically, two supporting base plates 16 are provided on the working platform 15 of the present application, and the placement positions of the fixing structures 20 and the workpiece 200 to be welded on the two supporting base plates 16 are symmetrical to each other.

[0045] In addition, since the support base plate 16 and the working platform 15 are detachably mounted, the support base plate 16 can be quickly removed and replaced with different positioning tools as needed, thereby improving the adaptability and flexibility of the welding positioning tool of the present application.

[0046] In some embodiments, a pressing block 17 is provided on the top surface of the working platform 15, and the pressing block 17 is used to press down the top surface of the supporting bottom plate 16 to fix the supporting bottom plate. It can be understood that the height of the pressing block 17 relative to the supporting bottom plate 16 is adjustable, and when the supporting bottom plate 16 needs to be positioned, the pressing block 17 presses down the top surface of the supporting bottom plate 16; and when the supporting bottom plate 16 needs to be removed, the height of the pressing block 17 is adjusted so that the pressing block 17 no longer contacts the supporting bottom plate 16, and the supporting bottom plate 16 can be removed at this time.

[0047] The utility model also proposes a welding device, the injection mold includes a welding positioning tool, the specific structure of the welding positioning tool refers to the above embodiment, since the welding device adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. The welding device also includes a welding mechanism 300, which is arranged beside the welding positioning tool.

[0048] In summary, in the welding positioning tooling provided by the present application, the fixed structure 20 is used to clamp and fix the workpiece 200 to be welded, and the first driving member 30 is used to drive the fixed structure 20 to rotate around a preset axis, so that the multiple welding surfaces 240 of the workpiece 200 to be welded are respectively facing the welding structure, and when the fixed structure 20 is rotated into place, the fixed structure 20 can be locked by the clamping structure 50, and finally welding can be performed. Therefore, the welding positioning tooling of the present application can realize welding of multiple surfaces with one clamping, avoiding multiple clamping and multiple handling, and the entire process is automatically coordinated and operated by the fixed structure 20, the clamping structure 50 and the first driving member 30, etc., so the degree of automation is greatly improved, and the welding efficiency is greatly improved.

[0049] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A welding positioning tool, used for cooperating with a welding mechanism (300) to weld a workpiece (200), characterized in that: The welding positioning tool comprises a frame (10), a first driving member (30), a clamping structure (50), and a fixed structure (20) rotatably arranged on the frame (10); the fixed structure (20) is used to fix the workpiece (200) to be welded, the workpiece (200) to be welded has a plurality of welding surfaces (240) distributed around a preset axis; the first driving member (30) is used to drive the fixed structure (20) to rotate around the preset axis so that one of the welding surfaces (240) faces the welding mechanism (300); the clamping structure (50) has a first state of clamping and fixing the fixed structure (20) or a second state of releasing the fixed structure (20); when the clamping structure (50) is in the first state, the welding mechanism (300) welds the workpiece (200) to be welded; when the clamping structure (50) is in the second state, the fixed structure (20) can be driven by the first driving member (30) to rotate.

2. The welding positioning tool as claimed in claim 1, characterized in that: The surface of the fixing structure (20) is provided with a limiting groove (21) for limiting the position of the workpiece to be welded (200); the workpiece to be welded (200) is arranged in the limiting groove (21) and the shape of the limiting groove (21) is adapted to the shape of the workpiece to be welded (200); the surface of the fixing structure (20) is also provided with a positioning component, and the positioning component is used to fix the workpiece to be welded (200).

3. The welding positioning tool as claimed in claim 2, characterized in that: The fixing structure (20) is a plate-like structure, the fixing structure (20) comprises a first surface (23) and a second surface (24) facing each other, the workpiece (200) to be welded is fixed to the first surface (23), the fixing structure (20) is provided with a through groove (25) penetrating the first surface (23) and the second surface (24), the workpiece (200) to be welded corresponds to the through groove (25), the workpiece (200) to be welded comprises two welding surfaces (240) facing each other, one of the welding surfaces (240) is arranged in the same direction as the first surface (23), and the other welding surface (240) is exposed to the second surface (24) through the through groove (25).

4. The welding positioning tool as claimed in claim 3, characterized in that: The fixing structure (20) fixes a plurality of parts to be welded (200), and the welding positions between the plurality of parts to be welded (200) all expose the first surface (23) or the second surface (24).

5. The welding positioning tool as claimed in claim 2, characterized in that: The positioning assembly includes one or more of a positioning pin (221) or a quick clamp (222).

6. The welding positioning tool according to any one of claims 1 to 5, characterized in that: The clamping structure (50) comprises a second driving member (52) and a supporting rod (51) slidably arranged on the frame (10), wherein the supporting rod (51) is connected to an output end of the second driving member (52), and the second driving member (52) is used to drive the supporting rod (51) to reciprocate along a preset direction so that the supporting rod (51) extends toward the bottom of the fixed structure (20) and supports the fixed structure (20) or is separated from the fixed structure (20).

7. The welding positioning tool as claimed in claim 6, characterized in that: The frame (10) comprises a first base body (11) and a second base body (12) which are spaced apart from each other; the fixed structure (20) is arranged between the first base body (11) and the second base body (12); two ends of the fixed structure (20) are rotatably connected to the first base body (11) and the second base body (12) via a rotating shaft; the first driving member (30) is arranged beside the first base body (11); the rotating shaft of the fixed structure (20) toward the first driving member (30) passes through the first base body (11) and is connected to the rotating output end of the first driving member (30).

8. The welding positioning tool as claimed in claim 7, characterized in that: The frame (10) further comprises a third base body (13), wherein the third base body (13), the second base body (12) and the first base body (11) are arranged in sequence along the preset direction, the second driving member (52) is fixed to the third base body (13), the supporting rod (51) is movably passed through the second base body (12), and when the fixed structure (20) stops rotating, the second driving member (52) drives the supporting rod (51) to extend toward the bottom of the fixed structure (20) to support the fixed structure (20).

9. The welding positioning tool according to any one of claims 1 to 5, characterized in that: The frame (10) comprises a working platform (15) and a plurality of supporting base plates (16) detachably mounted on the working platform (15), and each of the supporting base plates (16) is provided with the first driving member (30), the holding structure (50) and the fixing structure (20).

10. A welding device, characterized in that: The welding device comprises a welding positioning tool as claimed in any one of claims 1 to 9, and the welding device further comprises a welding mechanism (300), and the welding mechanism (300) is arranged beside the welding positioning tool.

Images