Welding fixture

Abstract

The application provides a welding fixing device, comprising a support, a first positioning assembly arranged on the support and used for positioning a first to-be-welded part in a first preset direction and a second preset direction, wherein the first preset direction and the second preset direction are arranged at a preset included angle, a first clamping assembly arranged on the support, at least part of the first clamping assembly being movably arranged to clamp or release the first to-be-welded part, a second positioning assembly arranged on the support and used for positioning a second to-be-welded part in the first preset direction and the second preset direction, and a second clamping assembly arranged on the support, at least part of the second clamping assembly being movably arranged to clamp or release the second to-be-welded part. The welding fixing device solves the problem that the welding fixture in the prior art cannot guarantee the welding quality.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and more specifically, to a welding fixing device. Background Technology

[0002] Currently, some product structures use enclosed box-shaped components as connectors. For these components, multiple non-perforated plates are typically assembled, and adjacent plates are welded together to achieve a fixed connection. Because box-shaped workpieces are sealed enclosures, it's difficult to weld all the internal connections between the non-perforated plates, resulting in some plates lacking internal welds. This leads to relatively poor overall integrity and load-bearing capacity of the enclosed box-shaped component. Therefore, ensuring welding quality is crucial for producing qualified enclosed box-shaped components.

[0003] However, current welding fixtures cannot guarantee welding quality and have a low degree of automation, resulting in low production efficiency and high labor intensity. Summary of the Invention

[0004] The main objective of this invention is to provide a welding fixing device to solve the problem that welding fixtures in the prior art cannot guarantee welding quality.

[0005] To achieve the above objectives, the present invention provides a welding fixing device, comprising: a support member; a first positioning component disposed on the support member and used to position a first workpiece to be welded in a first preset direction and a second preset direction; wherein the first preset direction and the second preset direction are arranged at a preset angle; a first clamping component disposed on the support member, at least a portion of the first clamping component being movably disposed to clamp or release the first workpiece to be welded; a second positioning component disposed on the support member and used to position a second workpiece to be welded in the first preset direction and the second preset direction; and a second clamping component disposed on the support member, at least a portion of the second clamping component being movably disposed to clamp or release the second workpiece to be welded.

[0006] Furthermore, the first positioning component includes a first stop and a second stop, both of which are disposed on the support member. The first stop is used to abut against the first side of the first workpiece to be welded to position the first workpiece to be welded in a first preset direction; the second stop is used to abut against the second side of the first workpiece to be welded to position the first workpiece to be welded in a second preset direction.

[0007] Furthermore, the first positioning component includes at least two first stops, which are arranged sequentially along a second preset direction.

[0008] Furthermore, the first clamping assembly includes a clamping member and a first driving member. The first driving member is disposed on the support member and is drivenly connected to the clamping member to drive at least a portion of the clamping member to move toward or away from the support member in order to clamp or release the first workpiece to be welded.

[0009] Furthermore, the first clamping assembly also includes a connecting seat, which is spaced apart from the output end of the first driving member; the output end of the first driving member is movably arranged in the vertical direction; one end of the clamping member is rotatably connected to the output end of the first driving member, and the clamping member is rotatably connected to the connecting seat, with the connection point between the two located between the two ends of the clamping member.

[0010] Furthermore, the welding fixing device includes two first clamping assemblies, which are arranged opposite to each other to clamp the two ends of the first workpiece to be welded.

[0011] Furthermore, the second positioning component includes a first support portion and a second support portion, both of which are connected to the support member. The first support portion is used to abut against the third side of the second workpiece to be welded, so as to position the second workpiece to be welded in a first preset direction; the second support portion is used to abut against the fourth side of the second workpiece to be welded, so as to position the second workpiece to be welded in a second preset direction.

[0012] Furthermore, the second positioning component includes at least two first support portions, which are arranged sequentially along a second preset direction.

[0013] Furthermore, the second clamping assembly includes a pressure plate and a second driving member. The pressure plate is disposed opposite to the first support in a first preset direction. The second driving member is disposed on the support and is drivenly connected to the pressure plate to drive the pressure plate to move along the first preset direction toward the direction closer to or away from the first support, so as to clamp or release the second workpiece to be welded.

[0014] Furthermore, the second clamping assembly also includes a limiting block and a limiting rod. The limiting block is disposed on the support member; one end of the limiting rod is connected to the second driving member, and the other end of the limiting rod is connected to the pressure plate. The limiting rod passes through the limiting rod and is movably disposed along the first preset direction.

[0015] According to the technical solution of this invention, the welding fixing device includes a support member, a first positioning component, a first clamping component, a second positioning component, and a second clamping component. The first positioning component, the first clamping component, the second positioning component, and the second clamping component are all disposed on the support member. The first positioning component and the first clamping component cooperate to position the first workpiece to be welded in a first preset direction and a second preset direction, and to clamp the first workpiece to be welded, placing it in a first fixed position. The second positioning component and the second clamping component cooperate to position the second workpiece to be welded in the first preset direction and the second preset direction, and to clamp the second workpiece to be welded, placing it in a second fixed position. Then, welding is performed on the fixed first and second workpieces to be welded using welding methods such as welding torches or laser welding. Therefore, this welding fixing device can perform the positioning and installation of the first and second workpieces to be welded, and can complete the welding work of the first and second workpieces to be welded within the welding fixing device, improving welding accuracy and welding quality, and is beneficial for improving production efficiency and reducing labor intensity. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 An isometric view of an embodiment of the welding fixing device according to the present invention is shown;

[0018] Figure 2 A front view of an embodiment of the welding fixing device according to the present invention is shown;

[0019] Figure 3 A side view of an embodiment of the welding fixing device according to the present invention is shown;

[0020] Figure 4 A top view of an embodiment of the welding fixing device according to the present invention is shown;

[0021] Figure 5 An isometric view of a first and a second workpiece to be welded is shown in the welding fixture according to the present invention.

[0022] Figure 6 A front view of a first workpiece to be welded and a second workpiece to be welded according to the welding fixing device of the present invention is shown;

[0023] Figure 7 A side view of a first workpiece to be welded and a second workpiece to be welded according to the welding fixing device of the present invention is shown;

[0024] Figure 8A top view of a first workpiece to be welded and a second workpiece to be welded according to the welding fixing device of the present invention is shown;

[0025] Figure 9 A top view of the support plate of the welding fixing device according to the present invention is shown;

[0026] Figure 10 A front view of the support plate of the welding fixing device according to the present invention is shown;

[0027] Figure 11 An isometric view of the third support frame of the welding fixing device according to the present invention is shown;

[0028] Figure 12 A front view of the third support frame of the welding fixing device according to the present invention is shown;

[0029] Figure 13 A side view of the third support frame of the welding fixing device according to the present invention is shown;

[0030] Figure 14 A top view of the third support frame of the welding fixing device according to the present invention is shown.

[0031] The above figures include the following reference numerals:

[0032] 10. Support component; 11. Support plate; 12. First support frame; 13. Second support frame;

[0033] 20. First positioning component; 21. First stop block; 22. Second stop block;

[0034] 30. The first component to be welded;

[0035] 40. First clamping assembly; 41. Clamping element; 42. First driving element; 43. Connecting seat;

[0036] 50. Second positioning component; 51. First support part; 52. Second support part;

[0037] 60. The second component to be welded;

[0038] 70. Second clamping assembly; 71. Pressure plate; 72. Second driving component; 73. Limiting block; 74. Limiting rod;

[0039] 80. Third support frame. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] This invention provides a welding fixing device, please refer to... Figures 1 to 14 The assembly includes: a support member 10; a first positioning component 20 disposed on the support member 10 and used to position a first workpiece 30 to be welded in a first preset direction and a second preset direction; wherein the first preset direction and the second preset direction are set at a preset angle; a first clamping component 40 disposed on the support member 10, at least a portion of the first clamping component 40 being movably disposed to clamp or release the first workpiece 30 to be welded; a second positioning component 50 disposed on the support member 10 and used to position a second workpiece 60 to be welded in the first preset direction and the second preset direction; and a second clamping component 70 disposed on the support member 10, at least a portion of the second clamping component 70 being movably disposed to clamp or release the second workpiece 60 to be welded.

[0044] The welding fixing device of the present invention includes a support member 10, a first positioning component 20, a first clamping component 40, a second positioning component 50, and a second clamping component 70. The first positioning component 20, the first clamping component 40, the second positioning component 50, and the second clamping component 70 are all disposed on the support member 10. The first positioning component 20 and the first clamping component 40 cooperate to position the first workpiece 30 to be welded in a first preset direction and a second preset direction, and can clamp the first workpiece 30 to be welded, so that the first workpiece 30 to be welded is in a first fixed position. The second positioning component 50 and the second clamping component 70 cooperate to position the second workpiece 60 to be welded in the first preset direction and the second preset direction, and can clamp the second workpiece 60 to be welded, so that the second workpiece 60 to be welded is in a second fixed position. Then, the fixed first workpiece 30 and the second workpiece 60 to be welded are welded by welding methods such as welding guns and laser welding. It is evident that the welding fixing device can be used to position and install the first part to be welded 30 and the second part to be welded 60, and can complete the welding work of the first part to be welded 30 and the second part to be welded 60 in the welding fixing device, thereby improving welding accuracy and welding quality, and also helping to improve production efficiency and reduce labor intensity.

[0045] Specifically, the first preset direction is set perpendicular to the second preset direction.

[0046] In practice, welding itself requires relatively little time, while over two-thirds of the total processing time is spent on material preparation, assembly, and other auxiliary tasks, significantly impacting welding production speed. This welding fixture accurately positions and reliably clamps the workpieces to be welded, facilitating assembly and welding, and ensuring the required structural precision. This welding fixture plays a crucial role in improving product quality, reducing worker workload, and accelerating the mechanization and automation of welding production.

[0047] Specifically, the first component to be welded, 30, is the bottom plate of the box, and the second component to be welded, 60, is the main body of the box, that is, a frame composed of four side plates.

[0048] In practical implementation, from a welding perspective, only by ensuring the correct relative positions of all parts and components can the welded enclosure meet the usage requirements. This welding fixing device, by positioning and clamping the enclosure's parts, can precisely guarantee these requirements.

[0049] In order to position the first workpiece 30 to be welded in a first preset direction and a second preset direction, the first positioning component 20 includes a first stop 21 and a second stop 22. Both the first stop 21 and the second stop 22 are disposed on the support member 10. The first stop 21 is used to abut against the first side of the first workpiece 30 to position the first workpiece 30 to be welded in the first preset direction; the second stop 22 is used to abut against the second side of the first workpiece 30 to position the first workpiece 30 to be welded in the second preset direction.

[0050] In this embodiment, the first positioning component 20 includes at least two first stops 21, which are sequentially arranged along a second preset direction. This arrangement enables reliable positioning of the first workpiece 30 to be welded in the first preset direction.

[0051] In this embodiment, the first clamping assembly 40 includes a clamping member 41 and a first driving member 42. The first driving member 42 is disposed on the support member 10 and is drivenly connected to the clamping member 41 to drive at least a portion of the clamping member 41 to move toward or away from the support member 10, thereby clamping or releasing the first workpiece 30 to be welded. This arrangement allows the first workpiece 30 to be welded to be clamped between the clamping member 41 and the support member 10 after it has been placed on the support member 10, thus fixing the first workpiece 30 to be welded.

[0052] Optionally, the first driving component 42 is a hydraulic cylinder.

[0053] To enable the clamping member 41 to clamp the first workpiece 30 to be welded, the first clamping assembly 40 further includes a connecting seat 43, which is spaced apart from the output end of the first driving member 42; the output end of the first driving member 42 is movably arranged in the vertical direction; one end of the clamping member 41 is rotatably connected to the output end of the first driving member 42, and the clamping member 41 is rotatably connected to the connecting seat 43, with the connection point between the two ends of the clamping member 41 located between the two ends. The other end of the clamping member 41 cooperates with the support member 10 to clamp the first workpiece 30 to be welded.

[0054] Optionally, the welding fixing device includes two first clamping components 40, which are arranged opposite to each other to clamp the two ends of the first workpiece 30 to be welded. This arrangement further improves the fixing effect on the first workpiece 30 to be welded.

[0055] In order to position the second workpiece 60 to be welded in a first preset direction and a second preset direction, the second positioning component 50 includes a first support portion 51 and a second support portion 52. Both the first support portion 51 and the second support portion 52 are connected to the support member 10. The first support portion 51 is used to abut against the third side of the second workpiece 60 to position the second workpiece 60 to be welded in the first preset direction; the second support portion 52 is used to abut against the fourth side of the second workpiece 60 to position the second workpiece 60 to be welded in the second preset direction.

[0056] Optionally, both the first support portion 51 and the second support portion 52 are columnar structures.

[0057] In this embodiment, the second positioning component 50 includes at least two first support portions 51, which are sequentially arranged along a second preset direction. This arrangement enables reliable positioning of the second workpiece 60 to be welded in the first preset direction.

[0058] In this embodiment, the second clamping assembly 70 includes a pressure plate 71 and a second driving member 72. The pressure plate 71 is disposed opposite to the first support portion 51 in a first preset direction. The second driving member 72 is disposed on the support portion 10 and is drivenly connected to the pressure plate 71 to drive the pressure plate 71 to move along the first preset direction toward or away from the first support portion 51, thereby clamping or releasing the second workpiece 60 to be welded. This arrangement allows the second workpiece 60 to be welded to be clamped between the pressure plate 71 and the first support portion 51 after the second workpiece 60 is placed on the first workpiece 30, thus fixing the second workpiece 60 to be welded.

[0059] Optionally, the second drive component 72 is a hydraulic cylinder.

[0060] In this embodiment, the second clamping assembly 70 further includes a limiting block 73 and a limiting rod 74. The limiting block 73 is disposed on the support member 10. One end of the limiting rod 74 is connected to the second driving member 72, and the other end of the limiting rod 74 is connected to the pressure plate 71. The limiting rod 74 passes through the limiting member 72 and is movably disposed along a first preset direction. This arrangement can guide and limit the movement path of the pressure plate 71.

[0061] In this embodiment, the support member 10 includes a support plate 11, a first support frame 12, and a second support frame 13. The first support frame 12 and the second support frame 13 are spaced apart on the support plate 11. The first positioning component 20 and the second positioning component 50 are both disposed on the first support frame 12. The first support frame 12 is used to support the first workpiece 30 and the second workpiece 60 to be welded. The first clamping component 40 is disposed on the support plate 11, and the second clamping component 70 is disposed on the second support frame 13 to ensure that the pressure plate 71 is positioned higher than the clamping component 41.

[0062] In this embodiment, the first support part 51 is mounted on the first support frame 12 via the third support frame 80, and the two first support parts 51 are spaced apart on the third support frame 80.

[0063] This invention solves the following technical problems: 1. Accurate and reliable positioning and clamping can reduce or even eliminate blanking and marking work, reduce dimensional tolerances of products, and improve the precision and interchangeability of parts. Using a welding fixing device can save a lot of auxiliary work time, such as marking, alignment, measurement, tack fixing, and workpiece flipping. With proper use of the welding fixing device, auxiliary time can generally be reduced by 50-90%, thus increasing production output. 2. Effectively prevents and reduces welding deformation. When a workpiece is welded in a free state, deformation generally occurs after welding. Using a welding fixing device, the workpiece can be accurately positioned and securely clamped. During welding, deformation is limited, especially for workpieces with high dimensional accuracy requirements, which cannot meet technical requirements without a welding fixing device. 3. Positions the workpiece to be welded in the optimal welding position, resulting in good weld formation, significantly reduced process defects, and increased welding speed. 4. Mechanical devices replace manual labor in completing heavy tasks such as positioning, clamping, and flipping of workpieces to be welded, improving workers' working conditions. 5. It can expand the application scope of advanced processes and promote the comprehensive development of mechanization and automation in welded structure production. Manual labor is physically demanding, and manually turning workpieces during welding is neither feasible nor safe. Using lightweight and flexible welding fixtures to replace manual positioning, clamping, and turning of workpieces can improve workers' working conditions.

[0064] The beneficial effects of this invention include: the welding fixing device plays a role in reducing the consumption of assembly and welding time, thereby increasing output; due to the improved quality, the post-weld deformation correction or process defect repair process can be reduced or eliminated, thus shortening the production cycle of the entire product.

[0065] The welding fixture of the present invention can clamp a group of workpieces with similar characteristics, is applicable to high-precision welding fixtures for precision machining, is applicable to new welding fixtures for various modern manufacturing techniques, and uses high-efficiency clamping equipment with hydraulic stations as power sources to further reduce labor intensity and improve labor productivity.

[0066] In practice, this welding fixing device can secure the enclosure, which is of paramount importance among all its components. During assembly welding, one hand must hold the side plate to be welded while the other holds the welding torch to perform spot welding, making it difficult to guarantee welding accuracy and quality. Due to limitations in welding height and the weight of the workpieces, it is impossible to complete the assembly welding of the four side plates and the bottom plate within the tooling. Therefore, this welding fixing device is needed to position and clamp the enclosure components. From a welding perspective, only by ensuring the correct relative positions of all parts and components can the welded enclosure meet the usage requirements. This welding fixing device, with its simple structure, can accurately position and clamp the enclosure components, and also improves welding efficiency.

[0067] In practice, the welded box is mainly composed of a bottom plate and four side plates. The bottom plate has mounting holes on its surface, and the side plates have inner holes and threaded holes. Each plane, inner hole and threaded hole needs to be machined after welding. First, the four side plates are welded into a whole, and then the whole is welded to the bottom plate.

[0068] The advantages of the welding fixing device of the present invention compared with traditional welding fixtures include: first, it realizes automatic positioning of the base plate and side plate to be welded; second, it eliminates the need to manually weld the side plate and the base plate; third, it allows the welding of the base plate and the side plate to be welded to be completed in the device. Therefore, this device not only reduces labor intensity and improves welding accuracy and welding quality, but also improves production efficiency.

[0069] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0070] The welding fixing device of the present invention includes a support member 10, a first positioning component 20, a first clamping component 40, a second positioning component 50, and a second clamping component 70. The first positioning component 20, the first clamping component 40, the second positioning component 50, and the second clamping component 70 are all disposed on the support member 10. The first positioning component 20 and the first clamping component 40 cooperate to position the first workpiece 30 to be welded in a first preset direction and a second preset direction, and can clamp the first workpiece 30 to be welded, so that the first workpiece 30 to be welded is in a first fixed position. The second positioning component 50 and the second clamping component 70 cooperate to position the second workpiece 60 to be welded in the first preset direction and the second preset direction, and can clamp the second workpiece 60 to be welded, so that the second workpiece 60 to be welded is in a second fixed position. Then, the fixed first workpiece 30 and the second workpiece 60 to be welded are welded by welding methods such as welding guns and laser welding. It is evident that the welding fixing device can be used to position and install the first part to be welded 30 and the second part to be welded 60, and can complete the welding work of the first part to be welded 30 and the second part to be welded 60 in the welding fixing device, thereby improving welding accuracy and welding quality, and also helping to improve production efficiency and reduce labor intensity.

[0071] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0072] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A welding fixing device, characterized in that, include: Support component (10); A first positioning component (20) is disposed on the support member (10) and used to position the first workpiece to be welded (30) in a first preset direction and a second preset direction; wherein the first preset direction and the second preset direction are set at a preset angle; A first clamping assembly (40) is disposed on the support (10), at least a portion of the first clamping assembly (40) being movably disposed to clamp or release the first workpiece to be welded (30). The second positioning component (50) is disposed on the support member (10) and is used to position the second workpiece (60) to be welded in the first preset direction and the second preset direction; A second clamping assembly (70) is disposed on the support (10), at least a portion of the second clamping assembly (70) being movably disposed to clamp or release the second workpiece to be welded (60). The second positioning component (50) includes a first support portion (51) and a second support portion (52). Both the first support portion (51) and the second support portion (52) are connected to the support member (10). The first support portion (51) is used to abut against the third side of the second part to be welded (60) to position the second part to be welded (60) in the first preset direction. The second support portion (52) is used to abut against the fourth side of the second part to be welded (60) to position the second part to be welded (60) in the second preset direction. The second positioning component (50) includes at least two first support portions (51), which are arranged sequentially along the second preset direction; both the first support portion (51) and the second support portion (52) are columnar structures. The first part to be welded (30) is the bottom plate of the box, and the second part to be welded (60) is the main body of the box. The main body of the box includes four side plates. The first part to be welded (30) and the second part to be welded (60) are welded together to form the box. The welding fixing device further includes a third support frame (80), and the support member (10) includes a support plate (11), a first support frame (12), and a second support frame (13); the first support frame (12) and the second support frame (13) are spaced apart on the support plate (11); the first positioning component (20) and the second positioning component (50) are both disposed on the first support frame (12), and the first support frame (12) is used to support the first workpiece to be welded (30) and the second workpiece to be welded (60); the first clamping component (40) is disposed on the support plate (11), and the second clamping component (70) is disposed on the second support frame (13), so that the pressure plate (71) of the second clamping component (70) is higher than the clamping member (41) of the first clamping component (40); the first support part (51) is mounted on the first support frame (12) through the third support frame (80); the two first support parts (51) are spaced apart on the third support frame (80).

2. The welding fixing device according to claim 1, characterized in that, The first positioning component (20) includes a first stop (21) and a second stop (22). Both the first stop (21) and the second stop (22) are disposed on the support member (10). The first stop (21) is used to abut against the first side of the first part to be welded (30) to position the first part to be welded (30) in the first preset direction. The second stop (22) is used to abut against the second side of the first part to be welded (30) to position the first part to be welded (30) in the second preset direction.

3. The welding fixing device according to claim 2, characterized in that, The first positioning component (20) includes at least two first stops (21), and the at least two first stops (21) are arranged sequentially along the second preset direction.

4. The welding fixing device according to claim 1, characterized in that, The first clamping assembly (40) includes a clamping member (41) and a first driving member (42). The first driving member (42) is disposed on the support member (10). The first driving member (42) is driven to be connected to the clamping member (41) to drive at least a portion of the clamping member (41) to move toward or away from the support member (10) to clamp or release the first workpiece to be welded (30).

5. The welding fixing device according to claim 4, characterized in that, The first clamping assembly (40) further includes a connecting seat (43), which is spaced apart from the output end of the first driving member (42); The output end of the first driving member (42) is movably arranged in the vertical direction; one end of the clamping member (41) is rotatably connected to the output end of the first driving member (42), and the clamping member (41) is rotatably connected to the connecting seat (43) and the connection point of the two is located between the two ends of the clamping member (41).

6. The welding fixing device according to claim 4, characterized in that, The welding fixing device includes two first clamping components (40), which are arranged opposite to each other to clamp the two ends of the first workpiece to be welded (30).

7. The welding fixing device according to claim 1, characterized in that, The second clamping assembly (70) includes a pressure plate (71) and a second driving member (72). The pressure plate (71) and the first support (51) are disposed opposite each other in the first preset direction. The second driving member (72) is disposed on the support (10) and is drivenly connected to the pressure plate (71) to drive the pressure plate (71) to move along the first preset direction toward or away from the first support (51) to clamp or release the second workpiece (60) to be welded.

8. The welding fixing device according to claim 7, characterized in that, The second clamping assembly (70) further includes a limiting block (73) and a limiting rod (74). The limiting block (73) is disposed on the support member (10). One end of the limiting rod (74) is connected to the second driving member (72), and the other end of the limiting rod (74) is connected to the pressure plate (71). The limiting rod (74) passes through the limiting rod (74) and is movably disposed along the first preset direction.

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