Assembly welding equipment and workpiece assembly welding method

Abstract

The invention discloses assembly welding equipment and a workpiece assembly welding method. The tool platform of the assembling and welding equipment comprises an objective table capable of ascending and descending in the height direction. The positioning tool is arranged on the objective table and used for bearing a workpiece to be installed and welded. The positioning tool comprises a first positioning mechanism, a second positioning mechanism and a third positioning mechanism which are used for clamping and positioning the workpiece to be installed and welded in the height direction, the length direction and the width direction correspondingly. The welding devices are arranged on one side of the tool platform at intervals, each welding device comprises a first guide rail extending in the length direction and a welding robot arranged on the first guide rail in a sliding mode, each welding robot comprises a welding end, and the welding ends extend to the position above the objective table and can move in the height direction. Through cooperation of the first positioning mechanism, the second positioning mechanism and the third positioning mechanism, positioning of the workpiece to be assembled and welded in three directions is achieved, positioning is reliable, then the workpiece is automatically welded through the welding robot, operation is safe, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of component processing equipment, and specifically relates to a welding assembly equipment and a workpiece welding assembly method. Background Art

[0002] During the assembly process of an excavator, the welding of the boom is crucial for the accuracy of the entire operation process of the excavator. Therefore, the assembly and welding of the boom are particularly important. Currently, during the boom welding process, the entire welding assembly process usually relies on manual labor. From component alignment, riveting and welding to internal weld operations, all are manual operations, resulting in uneven weld quality and difficulty in ensuring consistency. It also consumes a large amount of labor and time costs. In addition, the tooling benchmarks for boom welding are fixed and cannot be switched. When encountering complex and variable internal weld orientations, they are not well adapted and difficult to accurately position, interfering with the welding accuracy. Summary of the Invention

[0003] The purpose of this application is to provide a welding assembly equipment and a workpiece welding assembly method to achieve simultaneous automatic welding and precise positioning of workpieces.

[0004] To achieve the above purpose, on the one hand, this application provides a welding assembly equipment, including:

[0005] A tooling platform, including a loading platform that can be lifted in the height direction;

[0006] A positioning tooling, arranged on the loading platform and used to carry the workpiece to be welded and assembled. The positioning tooling includes a first positioning mechanism, a second positioning mechanism, and a third positioning mechanism that respectively clamp and position the workpiece to be welded and assembled in the height direction, length direction, and width direction;

[0007] A welding device, arranged at intervals on one side of the tooling platform. The welding device includes a first guide rail extending in the length direction and a welding robot sliding on the first guide rail. The welding robot includes a welding end, and the welding end extends above the loading platform and can move in the height direction.

[0008] In some embodiments, the first positioning mechanism includes:

[0009] A second guide rail, arranged on the loading platform and extending in the width direction;

[0010] A first positioning component, sliding on the second guide rail. The first positioning component includes a first pressing block and a first linear driving member. The first pressing block is connected to the driving end of the first linear driving member, and the first linear driving member is used to drive the first pressing block to move in the height direction to press or release the workpiece to be welded and assembled.

[0011] In some embodiments, the second positioning mechanism includes:

[0012] A third guide rail, arranged on the loading platform and extending in the length direction;

[0013] The second positioning components, two in number and arranged at intervals along the length direction, each second positioning component is correspondingly and slidably arranged on a third guide rail. Each second positioning component includes a second positioning member and a second linear driving member for driving the second positioning member to move in the height direction. Each second positioning member includes a first positioning block for positioning and cooperating with the end of the workpiece to be welded in the length direction.

[0014] In some embodiments, the second positioning component further includes a second positioning block. The second positioning block includes a plurality of positioning rings stacked coaxially in the height direction and a positioning taper pin coaxially inserted into the plurality of positioning rings. The positioning taper pin extends outward from the top end surface of the uppermost positioning ring and is used for plugging and positioning with the end of the workpiece to be welded. A spacer gasket is also provided between any two adjacent layers of positioning rings.

[0015] In some embodiments, the second positioning mechanism further includes an end supporting component. The end supporting component includes a mounting seat and a supporting block pivotally connected to the mounting seat. The end of the supporting block is used for supporting or releasing the side wall of the end of the workpiece to be welded.

[0016] In some embodiments, the third positioning mechanism includes:

[0017] A plurality of third positioning components are arranged on both sides of the workpiece to be welded along the width direction. The third positioning component includes a second pressing block and a third linear driving member drivingly connected to the second pressing block. The third linear driving member is used for driving the second pressing block to move in the width direction to press or release the side surface of the workpiece to be welded.

[0018] In some embodiments, ear plates are further provided on the side surface of the workpiece to be welded. The third positioning mechanism further includes an ear plate positioning component for positioning the ear plates. The ear plate positioning component further includes a positioning seat and an ear plate positioning post arranged on the positioning seat. The ear plate positioning post can move in the height direction to be positioned and inserted into or disengaged from the mounting hole of the ear plate.

[0019] In some embodiments, the tooling platform further includes two lifting platforms arranged at intervals along the length direction. Fourth guide rails extending in the height direction are provided on the opposite side surfaces of the two lifting platforms. The end of the loading platform along the length direction is slidably connected to the fourth guide rail.

[0020] In a second aspect of the present application, a workpiece welding method is provided. The workpiece welding method is carried out by using the welding equipment as described above. The workpiece includes an end support, a bottom plate, a top plate, and a middle support and side plates connected between the bottom plate and the top plate. The workpiece welding method includes the steps of:

[0021] S10: Place the bottom plate on the loading platform and perform central positioning;

[0022] S20: Place the top plate, side plates, end supports, and middle supports onto the bottom plate correspondingly, and use the first positioning mechanism, the second positioning mechanism, and the third positioning mechanism to achieve the clamping and positioning of the entire workpiece to be welded and assembled in the height direction, length direction, and width direction respectively;

[0023] S30: Drive the welding end of the welding robot to move above the workpiece to be welded and assembled, and weld the seams between the various plates through the welding end;

[0024] S40: After welding is completed, return the first positioning mechanism, the second positioning mechanism, the third positioning mechanism, and the welding robot to their original positions, and remove the welded workpiece.

[0025] In some embodiments, step S20 further includes the steps:

[0026] S21: Place the two side plates on both sides of the bottom plate along the width direction, and position and insert the ear plate positioning posts on the ear plate positioning assembly into the mounting holes of one side plate, and apply a pressing force along the width direction to the side plate through the third positioning assembly;

[0027] S22: Place the end supports at both ends of the bottom plate along the length direction, and use the end top support assembly of the second positioning mechanism to support the side walls of the end supports;

[0028] S23: Place the middle support on the bottom plate, and place the top plate on the middle support;

[0029] S24: Drive the first pressing block to move in the height direction through the first linear driving member, and the first pressing block and the middle support cooperate to clamp the top plate from the height direction.

[0030] Through the above technical solutions, the welding and assembling equipment and the workpiece welding and assembling method provided by the embodiments of the present invention have the following beneficial effects:

[0031] The welding and assembling equipment of the present application includes a tooling platform, a positioning tooling, and a welding device; the tooling platform includes a loading platform that can be lifted in the height direction; the positioning tooling is arranged on the loading platform and is used to carry the workpiece to be welded and assembled, and the positioning tooling includes a first positioning mechanism, a second positioning mechanism, and a third positioning mechanism that clamp and position the workpiece to be welded and assembled in the height direction, length direction, and width direction respectively; the welding devices are arranged at intervals on one side of the tooling platform and include a first guide rail extending in the length direction and a welding robot sliding on the first guide rail, and the welding end of the welding robot extends above the loading platform and can move in the height direction. The present application realizes the positioning of the workpiece to be welded and assembled in three directions through the cooperation of the first positioning mechanism, the second positioning mechanism, and the third positioning mechanism, with reliable positioning. Then, the workpiece is automatically welded by the welding robot, which is safe to operate, improves production efficiency, and reduces production costs.

[0032] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the drawings:

[0034] Figure 1 is a schematic structural diagram of the welding and assembling equipment of the present application when welding and assembling workpieces;

[0035] Figure 2 is a front view schematic diagram of the welding and assembling equipment of the present application when welding and assembling workpieces;

[0036] Figure 3 is a left view schematic diagram of the welding and assembling equipment of the present application when welding and assembling workpieces;

[0037] Figure 4 is a top view schematic diagram of the welding and assembling equipment of the present application when welding and assembling workpieces;

[0038] Figure 5 is a schematic structural diagram of the second positioning block in the welding and assembling equipment of the present application;

[0039] Figure 6 is a schematic structural diagram of the end support assembly in the welding and assembling equipment of the present application;

[0040] Figure 7 is a schematic flow diagram of the workpiece welding and assembling method in an embodiment of the present application.

[0041] DESCRIPTION OF THE REFERENCE NUMERALS

[0042] 100 Tooling platform 2263 Spacer

[0043] 11 Carrier table 231 Second pressing block

[0044] 12 Lifting platform 232 Third linear drive member

[0045] 13 Fourth guide rail 234 Ear plate positioning post

[0046] 211 Second guide rail 235 Positioning seat

[0047] 212 First pressing block 300 First guide rail

[0048] 213 First linear drive member 301 Welding robot

[0049] 221 Third guide rail 302 Boom

[0050] 222 First positioning block 400 Workpiece

[0051] 223 Second linear drive 401 Side plate

[0052] 224 Supporting block 402 Bottom plate

[0053] 225 Mounting seat 403 Top plate

[0054] 226 Second positioning block 404 End support

[0055] 2261 Positioning ring 405 Support column

[0056] 2262 Positioning taper pin Detailed implementation manners

[0057] The following describes the detailed implementation manners of the present application with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for explaining and understanding the present application, and are not used to limit the present application.

[0058] The following describes a welding equipment for assembling and a workpiece assembling and welding method according to the present application with reference to the accompanying drawings. Among them, the welding equipment for assembling can be applied to the welding of the boom in an excavator, and can also be applied to the welding process of other components that need to be welded in the excavator.

[0059] As Figure 1 shown, the present application provides a welding equipment for assembling, which includes a tooling platform 100, a positioning tooling 200 and a welding device; the tooling platform 100 includes a loading platform 11 that can be lifted in the height direction; the positioning tooling 200 is arranged on the loading platform 11 and is used for carrying the workpiece 400 to be assembled and welded. The positioning tooling 200 includes a first positioning mechanism 21, a second positioning mechanism 22 and a third positioning mechanism 23 that respectively clamp and position the workpiece 400 to be assembled and welded in the height direction, length direction and width direction; the welding device is arranged at intervals on one side of the tooling platform 100. The welding device includes a first guide rail 300 extending in the length direction and a welding robot 301 sliding on the first guide rail 300. The welding robot 301 includes a welding end, and the welding end extends above the loading platform 11 and can move in the height direction, and the welding end can move in the width direction.

[0060] For the convenience of description, as Figure 1 shown, the height direction in the present application refers to the up and down direction, the length direction refers to the left and right direction, and the width direction refers to the front and back direction.

[0061] Compared with the existing group welding tooling that lacks the lifting function, when the product is too high, it is inconvenient for workers to operate, resulting in low loading efficiency. The loading platform 11 of the present application can be lifted in the height direction to rise to a height convenient for the operator to load parts, so as to facilitate the workers to load parts for workpieces 400 of different heights, improve the loading efficiency, and thus improve the welding efficiency. Before welding the workpiece 400 to be group-welded, the first positioning mechanism 21, the second positioning mechanism 22, and the third positioning mechanism 23 are first used to position and clamp the workpiece 400 to be group-welded in the height direction, length direction, and width direction respectively, so as to prevent the position of the workpiece 400 to be group-welded from moving during the welding process, resulting in welding deviation. After positioning, the welding end of the welding robot 301 rises above the loading platform 11, and the seam of the workpiece 400 to be group-welded is welded by moving the welding end in the length direction and width direction, realizing welding automation.

[0062] In some embodiments, the first positioning mechanism 21 includes a second guide rail 211 and a first positioning component; the second guide rail 211 is arranged on the loading platform 11 and extends in the width direction; the first positioning component is slidably arranged on the second guide rail 211. As Figure 2 shown, the first positioning component includes a first pressing block 212 and a first linear driving member 213. The first pressing block 212 is connected to the driving end of the first linear driving member 213. The first linear driving member 213 is used to drive the first pressing block 212 to move in the height direction to press down or release the workpiece 400 to be group-welded.

[0063] In this embodiment, in order to realize the positioning of the workpiece 400 to be group-welded in the height direction, a plurality of support columns 405 are arranged at intervals on the loading platform 11, and the workpiece 400 to be group-welded is supported on the support columns 405. When positioning and pressing are required, the first linear driving member 213 moves in the width direction on the second guide rail 211, so that the first linear driving member 213 drives the first pressing block 212 to move above the workpiece 400 to be group-welded; then the first linear driving member 213 drives the first pressing block 212 to move downward, so that the first pressing block 212 exerts a downward pressure on the workpiece 400 to be group-welded, and the workpiece 400 to be group-welded is positioned and clamped in the height direction under the action of the first pressing block 212 and the support columns 405, so as to prevent the workpiece 400 to be group-welded from moving in the height direction.

[0064] In some embodiments, the second positioning mechanism 22 includes a third guide rail 221 and a second positioning assembly; the third guide rail 221 is disposed on the loading platform 11 and extends along the length direction; the number of the second positioning assemblies is two groups and they are arranged at intervals along the length direction respectively. Each second positioning assembly is slidably disposed on a third guide rail 221 correspondingly. Each second positioning assembly includes a second positioning member and a second linear driving member 223 for driving the second positioning member to move in the height direction. Each second positioning member includes a first positioning block 222 which is in positioning cooperation with the end of the workpiece 400 to be assembled and welded along the length direction.

[0065] In this embodiment, in order to realize the end positioning of the workpiece 400 to be assembled and welded along the length direction, positioning holes are provided at both ends of the workpiece 400 to be assembled and welded along the length direction. When starting the positioning, the second positioning assemblies at both ends move towards the ends of their respective workpieces 400 to be assembled and welded along the length direction, so that the second positioning members on each second positioning assembly move above the mounting holes. Then, the second linear driving member 223 drives the second positioning member to move in the height direction, so that the second positioning member moves towards the mounting hole. When the first positioning block 222 is in positioning cooperation with the mounting hole, the end positioning of the workpiece 400 to be assembled and welded along the length direction is completed.

[0066] In some embodiments, as Figure 5 shown, the second positioning assembly further includes a second positioning block 226. The second positioning block 226 includes a plurality of positioning rings 2261 stacked coaxially in the height direction and a positioning taper pin 2262 coaxially inserted into the plurality of positioning rings 2261. The positioning taper pin 2262 extends outwards from the top end surface of the uppermost positioning ring 2261 and is used for plugging and positioning with the end of the workpiece 400 to be assembled and welded. A spacer gasket 2263 is further provided between any two adjacent layers of positioning rings 2261.

[0067] Wherein, during positioning, the top end of the positioning taper pin 2262 is aligned with the positioning hole, and the positioning taper pin 2262 is plugged with the positioning hole by the movement of the second positioning block 226, so as to realize the end positioning of the second positioning block 226 on the workpiece 400 to be assembled and welded. Moreover, the spacer gasket 2263 between the plurality of positioning rings 2261 of the present application can be finely adjusted in precision, so that the height of the second positioning block 226 can be adapted to the sizes of different models, thereby improving the versatility of the second positioning assembly. In addition, since the positioning taper pin 2262 is used in the second positioning block 226 to cooperate with the positioning hole, and the outer diameter of the positioning taper pin 2262 has a gradient structure, it can be applicable to the positioning of positioning holes with different diameters.

[0068] In some embodiments, the second positioning mechanism 22 further includes an end supporting component, as Figure 6As shown, the end support assembly includes a mounting base 225 and a support block 224 pivotally connected to the mounting base 225. The end of the support block 224 is used to support or release the end side wall of the workpiece 400 to be welded. In this embodiment, when positioning the end side arm of the workpiece 400 to be welded, by pressing the support block 224, the pivot connection point of the support block 224 relative to the mounting base 225 rotates, so that the support block 224 supports the end side wall of the workpiece 400 to be welded, thereby preventing the end of the workpiece 400 to be welded from moving in the width direction. When the positioning is completed, the support block 224 is directly released, and the support block 224 moves away from the end side wall of the workpiece 400 to complete the positioning. In this application, by setting the end support assembly into the structure form of the flipable support block 224, the size of the support block 224 can be determined according to actual needs, thereby improving the changeover efficiency.

[0069] In some embodiments, the third positioning mechanism 23 includes multiple groups of third positioning components; the multiple groups of third positioning components are arranged on both sides of the workpiece 400 to be welded along the width direction. The third positioning component includes a second pressing block 231 and a third linear driving member 232 drivingly connected to the second pressing block 231. The third linear driving member 232 is used to drive the second pressing block 231 to move along the width direction to press or release the side surface of the workpiece 400 to be welded. In this embodiment, in order to realize the side positioning of the workpiece 400 to be welded, the third linear driving member 232 drives the second pressing block 231 to move towards the side surface of the workpiece 400 to apply a pressing force to the side surface of the workpiece 400 to be welded, so as to press the side surface of the workpiece 400 to be welded from the width direction, thereby realizing side positioning.

[0070] It should be noted that the first linear driving member 213, the second linear driving member 223 and the third linear driving member 232 of this application are all components capable of linear driving. For example, they can be common linear structure forms such as cylinders, oil cylinders and driving motors + rotating lead screws in the prior art. As long as it is a driving member capable of realizing linear driving, it is within the protection scope of this application. Therefore, the structure forms of the three linear driving members will not be further described.

[0071] In some embodiments, such as Figure 4As shown, an ear plate is further provided on the side surface of the workpiece 400 to be assembled and welded. The third positioning mechanism 23 further includes an ear plate positioning assembly for positioning the ear plate. The ear plate positioning assembly further includes a positioning seat 235 and an ear plate positioning post 234 provided on the positioning seat 235. The ear plate positioning post 234 can move in the height direction to be positioned and inserted into or disengaged from the mounting hole of the ear plate. In this embodiment, a mounting hole is provided on the ear plate. The ear plate positioning post 234 is spirally inserted into the positioning seat 235. When the ear plate needs to be positioned, by rotating the ear plate positioning post 234, the bottom of the ear plate positioning post 234 moves towards the mounting hole of the ear plate until the ear plate positioning post 234 is inserted into the mounting hole, thereby realizing the limit positioning of the ear plate. When the welding is completed, rotate the ear plate positioning post 234 in the reverse direction, and the bottom of the ear plate positioning post 234 disengages from the mounting hole and moves away from the ear plate.

[0072] In some embodiments, the tooling platform 100 further includes two lifting platforms 12 arranged at intervals along the length direction. Fourth guide rails 13 extending in the height direction are provided on the opposite side surfaces of the two lifting platforms 12. The end of the carrier table 11 along the length direction is slidably connected to the fourth guide rail 13. In this embodiment, since the two ends of the carrier table 11 along the length direction are slidably arranged on the fourth guide rail 13, by sliding the carrier table 11 up and down on the fourth guide rail 13, the height of the carrier table 11 can be adjusted, so as to meet the feeding requirements of workpieces 400 with different heights.

[0073] In some embodiments, as Figure 3 shown, the welding robot 301 further includes a boom 302 that can telescopically move in the height direction. The bottom end of the boom 302 is slidably connected to the first guide rail 300, and the top end of the boom 302 is connected to the welding end. In a preferred embodiment, the boom 302 can achieve telescopic movement in the height direction by means of linear driving such as an oil cylinder or a cylinder. A linear driving member is provided between the bottom of the boom 302 and the first guide rail 300, so as to drive the welding end of the boom 302 to move in the height direction. Thus, in addition to being able to move along the first guide rail 300 in the length direction, the welding robot 301 can also change in the height direction, so that the welding end can weld welds at different positions. Among them, in order to realize the position movement of the welding end in the width direction, an extension section at the top end of the boom 302 is provided with a chute that cooperates with the welding end and extends in the width direction, so as to realize the movement of the welding end along the extending direction of the chute.

[0074] The second aspect of the present application provides a workpiece assembly and welding method. The workpiece assembly and welding method is carried out by using the assembly and welding equipment described above. The workpiece includes an end support, a bottom plate, a top plate, and a middle support and side plates connected between the bottom plate and the top plate. As Figure 7 shown, the workpiece assembly and welding method includes the steps:

[0075] S10: Place the bottom plate on the loading platform and perform centering positioning;

[0076] S20: Place the top plate, side plates, end supports, and middle supports on the bottom plate respectively, and use the first positioning mechanism, the second positioning mechanism, and the third positioning mechanism to achieve the pressing and positioning of the entire workpiece to be welded and assembled in the height direction, length direction, and width direction;

[0077] S30: Drive the welding end of the welding robot to move above the workpiece to be welded and assembled, and weld the seams between the various plates through the welding end;

[0078] S40: After welding is completed, return the first positioning mechanism, the second positioning mechanism, the third positioning mechanism, and the welding robot to their original positions, and remove the welded workpiece.

[0079] When welding the workpiece, first use this welding and assembly equipment to splice and assemble the workpiece. Specifically, first place the bottom plate on the loading platform and use the central hole of the bottom plate for centering positioning; then place the end supports at both ends of the bottom plate in the length direction, place the middle support on the bottom plate, place the top plate on the middle support, and place the side plates between the bottom plate and the top plate, thereby completing the preliminary assembly of the entire workpiece to be welded and assembled, and use the first positioning mechanism, the second positioning mechanism, and the third positioning mechanism to achieve the pressing and positioning of the entire workpiece to be welded and assembled in the height direction, length direction, and width direction. After positioning is completed, the welding end of the welding robot is adjusted in the length direction, height direction, and width direction so that the welding end moves to the seam position that needs to be welded, and starts to weld the seams between the various plates. After spot welding is completed, return each positioning mechanism and the welding robot to their original positions, and remove the welded workpiece.

[0080] This application introduces an automated welding robot to weld the seams between the various plates of the workpiece to be welded and assembled, and uses multiple positioning mechanisms to achieve precise positioning of the workpiece to be welded and assembled, greatly improving the welding accuracy and positioning accuracy, and enhancing the welding efficiency and safety.

[0081] In some embodiments, step S20 further includes the steps:

[0082] S21: Place the two side plates on both sides of the bottom plate in the width direction, and the ear plate positioning posts on the ear plate positioning assembly are positioned and inserted into the mounting holes of one side plate, and apply a pressing force in the width direction to the side plate 401 through the third positioning assembly;

[0083] S22: Place the end supports at both ends of the bottom plate in the length direction, and use the end top support assembly of the second positioning mechanism 22 to top support the side walls of the end supports;

[0084] S23: Place the middle support on the bottom plate and place the top plate on the middle support.

[0085] S24: Drive the first pressing block to move in the height direction through the first linear driving member, and the first pressing block and the middle support cooperate to clamp the top plate in the height direction.

[0086] When initially assembling, splicing, and positioning the workpiece to be welded, first place the two side plates on both sides of the bottom plate in the width direction. Since there is an ear plate extending outward on one side plate, use the positioning plug-in of the ear plate positioning column and the positioning hole of the ear plate to achieve the positioning of the side plate, and use the second pressing block in the third positioning component to press the side plate, thereby achieving the pressing of the side plate in the width direction. Then place the two end supports on both ends of the bottom plate along the length direction respectively. The end supports are located between the ends of the two side plates, and the top support block in the end top support component applies a top support force to the side wall of the end support, thereby achieving the positioning of the end support. After the end positioning is completed, place the middle support on the bottom plate, and then place the top plate correspondingly on the middle support so that the top plate, bottom plate, side plates, and end supports enclose a box structure; drive the first pressing block to apply a downward pressing force to the top plate through the low linear driving member, so that it can cooperate with the middle support to clamp the top plate in the height direction. Compared with the large error in the position splicing between multiple plates before welding in the prior art, in this application, during the assembly process of the entire workpiece to be welded, automatic positioning is achieved through multiple positioning components, and the positioning is more accurate, which can improve the accuracy of subsequent welding.

[0087] In the description of this application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] In this application, unless otherwise clearly specified and limited, the terms "install", "connect", "connection", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0090] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A welding device, characterized in that: include: A tooling platform (100) comprises a loading platform (11) capable of being raised and lowered in a height direction; A positioning tool, arranged on the stage (11) and used to carry the workpiece (400) to be welded, the positioning tool comprising a first positioning mechanism, a second positioning mechanism and a third positioning mechanism for clamping and positioning the workpiece (400) to be welded in the height direction, the length direction and the width direction respectively; A welding device is arranged at intervals on one side of the tooling platform (100), the welding device comprising a first guide rail (300) extending in a length direction and a welding robot (301) slidably arranged on the first guide rail (300), the welding robot (301) comprising a welding end, the welding end extending to above the loading platform (11) and being movable in a height direction.

2. The welding equipment according to claim 1, characterized in that: The first positioning mechanism comprises: A second guide rail (211) is disposed on the loading platform (11) and extends along the width direction; A first positioning assembly is slidably disposed on the second guide rail (211), the first positioning assembly comprises a first clamping block (212) and a first linear driving member (213), the first clamping block (212) is connected to a driving end of the first linear driving member (213), the first linear driving member (213) is used to drive the first clamping block (212) to move along a height direction to press down or release the workpiece (400) to be welded.

3. The assembly welding equipment according to claim 1, characterized in that: The second positioning mechanism comprises: A third guide rail (221) is disposed on the loading platform (11) and extends along the length direction; The second positioning components are in two groups and are arranged at intervals along the length direction. Each of the second positioning components is slidably arranged on a third guide rail (221). Each of the second positioning components includes a second positioning member and a second linear driving member (223) for driving the second positioning member to move along the height direction. Each of the second positioning members includes a first positioning block (222) for positioning and cooperating with the end of the workpiece (400) to be welded in the length direction.

4. The welding equipment according to claim 3, characterized in that: The second positioning assembly also includes a second positioning block (226), which includes a plurality of positioning rings (2261) coaxially stacked in a height direction and a positioning cone pin (2262) coaxially plugged into the plurality of positioning rings (2261), wherein the positioning cone pin (2262) extends outward from the top end of the uppermost positioning ring (2261) and is used for plugging and positioning with the end of the workpiece (400) to be welded, and an interlayer gasket (2263) is also provided between any two adjacent layers of the positioning rings (2261).

5. The assembly welding equipment according to claim 3, characterized in that: The second positioning mechanism also includes an end support assembly, which includes a mounting seat (225) and a support block (224) pivotally connected to the mounting seat (225), and the end of the support block (224) is used to support or release the end side wall of the workpiece (400) to be welded.

6. The assembly welding equipment according to claim 1, characterized in that: The third positioning mechanism comprises: The third positioning components are multiple in number and are arranged on both sides of the workpiece (400) to be welded along the width direction. The third positioning components include a second clamping block (231) and a third linear driving member (232) drivingly connected to the second clamping block (231). The third linear driving member (232) is used to drive the second clamping block (231) to move along the width direction to clamp or release the side of the workpiece (400) to be welded.

7. The assembly welding equipment according to claim 6, characterized in that: An ear plate is also provided on the side of the workpiece (400) to be welded, and the third positioning mechanism also includes an ear plate positioning assembly for positioning the ear plate, and the ear plate positioning assembly also includes a positioning seat (235) and an ear plate positioning column (234) provided on the positioning seat (235), and the ear plate positioning column (234) can move in the height direction to be positioned and inserted into the mounting hole of the ear plate or detached from the mounting hole.

8. The assembly welding equipment according to any one of claims 1 to 7, characterized in that: The tooling platform (100) further comprises two lifting platforms (12) spaced apart in the length direction, and opposite sides of the two lifting platforms (12) are provided with fourth guide rails (13) extending in the height direction, and the end of the loading platform (11) in the length direction is slidably connected to the fourth guide rails (13).

9. A workpiece welding method, characterized in that: The workpiece welding method is performed using the welding equipment according to any one of claims 1 to 8, wherein the workpiece includes an end support, a bottom plate, a top plate, and a middle support and a side plate connected between the bottom plate and the top plate, and the workpiece welding method includes the steps of: S10: placing the base plate on the stage and performing center positioning; S20: placing the top plate, the side plate, the end support and the middle support on the bottom plate accordingly, and respectively realizing the pressing and positioning of the entire workpiece to be welded in the height direction, the length direction and the width direction through the first positioning mechanism, the second positioning mechanism and the third positioning mechanism; S30: driving the welding end of the welding robot to move to the upper side of the workpiece to be welded, and welding the seams between the plates through the welding end; S40: After welding is completed, the first positioning mechanism, the second positioning mechanism, the third positioning mechanism and the welding robot are returned to their positions, and the welded workpiece is removed.

10. The workpiece welding method according to claim 9, characterized in that: The step S20 further comprises the steps of: S21: placing the two side panels on both sides of the bottom panel along the width direction, positioning and inserting the ear panel positioning columns on the ear panel positioning components into the mounting holes of one of the side panels, and applying a pressing force along the width direction to the side panels through the third positioning components; S22: arranging the end supports at both ends of the bottom plate along the length direction, and supporting the side walls of the end supports through the end support assembly of the second positioning mechanism; S23: placing the middle support on the bottom plate, and placing the top plate on the middle support; S24: The first clamping block is driven to move in the height direction by the first linear drive member, and the first clamping block cooperates with the middle support to clamp the top plate in the height direction.

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