Electric vehicle long-tail support welding tool

Abstract

The utility model provides a welding tool for a long-tail support of an electric vehicle. The welding tool comprises a tool bottom plate, a lower frame positioning mechanism, an upper frame positioning mechanism and a lateral supporting mechanism, wherein the lower frame positioning mechanism, the upper frame positioning mechanism and the lateral supporting mechanism are arranged on the tool bottom plate. The lower frame positioning mechanism comprises a lower bearing block-up mechanism and a lateral pushing mechanism. The upper frame positioning mechanism comprises a front abutting mechanism and an upper pressing mechanism. The lateral supporting mechanism is arranged below the outer side of the main supporting frame, and the lateral supporting mechanism obliquely and upwards abuts against and supports the main supporting frame from the outer side face of the main supporting frame. According to the utility model, the lower frame is effectively supported through the lower supporting and elevating mechanism, the pipe orifice of the lower frame is elevated, the upper frame is effectively pressed and limited in height through the upper pressing mechanism, the pipe orifice of the upper frame is pressed and limited through the front abutting mechanism, and the main support frame is laterally supported through the lateral support mechanism. And it is effectively guaranteed that all parts of the long-tail support are accurately and reliably positioned, and follow-up welding machining is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of the production and manufacturing of electric vehicle parts, in particular to a welding tooling for a long-tail bracket of an electric vehicle. Background Technique

[0002] In the production and manufacturing of various parts of an electric vehicle, the production of the tail frame is an important part thereof. The tail frame of an electric vehicle can be divided into a short-tail bracket and a long-tail bracket according to its length. At present, the existing long-tail bracket is as Figure 1 shown, and generally includes an upper frame and a lower frame. The upper frame and the lower frame are in a U-shaped structure with an opening on one side, and the openings of the upper frame and the lower frame face the same side direction. The upper frame and the lower frame are usually made by bending round pipe fittings. Between the upper frame and the lower frame, a main support frame and a side support frame are respectively connected correspondingly. Among them, the bottom of the U-shaped structure of the upper frame and the lower frame is supported by the main support frame, and the two side edges of the opening of the U-shaped structure of the upper frame and the lower frame are supported by the side support frame. In actual selection and design, the main support frame is usually a stamping plate structure, and after being positioned with the upper and lower frames, it is respectively welded to the upper and lower frames. The side support frame can be made by cutting a round pipe fitting and then welding it between the upper and lower frames.

[0003] In the production and manufacturing of the long-tail bracket, first, the upper frame, the lower frame, the main support frame, and the side support frame need to be bent and stamped into shape respectively. Then, each component needs to be positioned, supported, clamped and assembled, and welded to form an integral structure. The positioning and clamping of each component need to be carried out by using a welding tooling for an electric vehicle long-tail bracket. Therefore, how to design the welding tooling according to the positioning requirements and welding requirements has become a problem to be solved at present.

[0004] In the positioning and assembly of the long-tail bracket, due to the requirements of the shape design, in the support and clamping of the lower frame, on the one hand, support needs to be provided for the lower frame below, and the lower frame needs to be positioned corresponding to the opening direction of the lower frame. For the pipe orifices at both ends of the opening position of the lower frame, it is also necessary to raise the height to meet the processing requirements. Corresponding to the main support frame, the lower end of the main support frame is crimped on the lower frame, and the upper end is crimped with the upper frame. Further positioning support needs to be provided for the main support frame during positioning.

[0005] Therefore, how to design a welding tooling according to the design requirements of the existing long-tail bracket has become a problem to be solved urgently at present. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, the utility model provides a welding tooling for a long-tail bracket of an electric vehicle, which can effectively raise the pipe orifice position of the lower frame according to the processing requirements, and provide effective positioning and fixing for each component of the long-tail bracket to meet the welding processing requirements.

[0007] The technical solution adopted by the present utility model to solve its technical problems is as follows: An electric vehicle long-tail bracket welding tooling is used to support and position the long-tail bracket. The long-tail bracket includes a lower frame, an upper frame, a main support frame and a side support frame supported between the upper frame and the lower frame. The welding tooling includes a tooling bottom plate and a lower frame positioning mechanism, an upper frame positioning mechanism and a lateral support mechanism arranged on the tooling bottom plate; the lower frame is respectively provided with a lower frame positioning mechanism at positions on both sides of the pipe orifice. The lower frame positioning mechanism includes a lower support and elevation mechanism and a lateral propulsion mechanism. The lower support and elevation mechanism is supported under the lower frame and elevates the front pipe orifice of the lower frame. The lateral propulsion mechanism is arranged under the side of the lower frame and pushes the lower frame inward for positioning from the outside; the upper frame positioning mechanism includes a front abutting mechanism and an upper pressing mechanism. The front abutting mechanism for supporting and positioning the pipe orifices of the upper frame is arranged at the positions of the pipe orifices on both sides of the upper frame. The upper pressing mechanism is arranged above the position where the upper frame is correspondingly connected to the main support frame, and the upper pressing mechanism is limited and pressed on the upper frame; the lateral support mechanism is arranged under the outside of the main support frame, and the lateral support mechanism obliquely upwards presses and supports the main support frame from the outer side of the main support frame.

[0008] In the above solution, for the respective structural parts of the electric vehicle long-tail bracket, a lower frame positioning mechanism, an upper frame positioning mechanism and a lateral support mechanism are respectively designed correspondingly, which can effectively position, support and limit each component, and elevate the pipe orifice of the lower frame, facilitating the normal progress of subsequent welding processing.

[0009] Further, in the positioning operation of the lower frame, the lower frame is pushed and positioned by the lateral propulsion mechanism. The lateral propulsion mechanism includes a lateral positioning block and a quick clamp; the lateral positioning block is arranged at the corner position of the U-shaped structure of the lower frame, and the upper end surface of the lateral positioning block has a groove arranged in imitation of the outer shape of the lower frame. The lower frame is positioned in cooperation with the groove. The clamping end of the quick clamp is fixed to the lateral positioning block and pushes the lateral positioning block towards the inner side of the lower frame opening when clamping.

[0010] Preferably, the lateral propulsion mechanism further includes a lateral support block. The lateral support block is arranged under the lateral positioning block. When the quick clamp of the lateral propulsion mechanism clamps, there is a gap between the top of the lateral support block and the bottom of the lateral positioning block; when the quick clamp of the lateral propulsion mechanism relaxes, the lateral positioning block falls on the top of the lateral support block and is supported by the lateral support block. The lateral support block can provide support guarantee for the lower frame and the lateral positioning block, and provide limit for the lowest point of the lateral positioning block in the height direction.

[0011] Further, during the operation of raising the pipe orifice of the lower frame, the lower supporting and raising mechanism includes a lower supporting bracket, a pipe orifice raising block, and a quick clamp; the lower supporting bracket is fixed on the tooling bottom plate, and the position of the pipe orifice of the lower frame is arranged below the lateral positioning block; the pipe orifice raising block is fixed at the chuck end of the quick clamp of the lower supporting and raising mechanism, and the bottom surface of the pipe orifice raising block is an inclined surface. When the quick clamp of the lower supporting and raising mechanism is tightened, the pipe orifice of the lower frame is placed on the upper end surface of the pipe orifice raising block and the pipe orifice is raised by the pipe orifice raising block.

[0012] Further, during the positioning of the upper frame, the position of the pipe orifice of the upper frame is limited by the front abutting mechanism. The front abutting mechanism includes a pipe orifice supporting frame, a pipe orifice abutting and positioning piece, and a quick clamp; the bottom of the pipe orifice supporting frame is fixed to the tooling bottom plate, and the top has a U-shaped groove for supporting and clamping the pipe orifice of the upper frame; the pipe orifice abutting and positioning piece is fixed on the clamping end of the quick clamp of the front abutting mechanism. When the quick clamp of the front abutting mechanism is tightened, the pipe orifice abutting and positioning piece is pressed against the pipe orifice of the upper frame.

[0013] Furthermore, the front abutting mechanism further includes an abutting and positioning bracket. The bottom of the abutting and positioning bracket is fixed to the tooling bottom plate, and the top is correspondingly arranged at the inner side position of the pipe orifice of the upper frame. The pipe orifice abutting and positioning piece is of an angle iron structure. The clamping end of the quick clamp of the front abutting mechanism is fixed to the inner side surface of the angle iron structure. When the quick clamp of the front abutting mechanism is tightened, the outer side surface of one corner edge of the angle iron structure is pressed against the pipe orifice of the upper frame, and the outer side surface of the other corner edge is pressed against and limited by the abutting and positioning bracket. Through the cooperative setting of the pipe orifice abutting and positioning piece and the abutting and positioning bracket, when tightened, the pipe orifice abutting and positioning piece can limit the pipe orifice of the upper frame, and the pipe orifice abutting and positioning piece itself is limited by the abutting and positioning bracket, further ensuring the accurate positioning of the pipe orifice of the upper frame.

[0014] Further, the positioning of the upper frame in the vertical direction is limited by the upper pressing mechanism. The upper pressing mechanism includes an upper pressing fixed bracket, a pressing slider, and a quick clamp; the lower end of the upper pressing fixed bracket 18 is fixed on the tooling bottom plate. A vertical sliding groove is formed on the side surface of the upper pressing fixed bracket close to the upper frame. The pressing slider is slidably arranged in the sliding groove. The outer shape of the lower end surface of the pressing slider is in imitation matching with the outer shape of the upper frame. The chuck end of the quick clamp of the upper pressing mechanism is fixed to the pressing slider. When the quick clamp of the upper pressing mechanism is tightened, the lower end surface of the pressing slider is pressed against the upper frame.

[0015] Further, the diagonal positioning support of the main support frame is realized by a lateral support mechanism. The lateral support mechanism includes a diagonal quick clamp and a clamp mounting block. The diagonal quick clamp is fixed on the clamp mounting block. When the clamping head of the diagonal quick clamp is tightened, it is set to abut against the main support frame obliquely from the lower oblique direction. A through hole is opened on the upper pressing and fixing frame, and the clamp mounting block is fixedly installed in the through hole by bolts. By applying an upward diagonal abutting support to the main support frame through the lateral support mechanism and cooperating with the limiting pressing down of the upper frame, the positioning operation of the main support frame can be completed, facilitating subsequent welding processing.

[0016] Furthermore, lower brackets are respectively supported and arranged at the lower ends of the lower frames corresponding to the two sides of the main support block on the tooling base plate. The bottom of the lower bracket is fixed to the tooling base plate, and the top has a U-shaped fitting groove that is shaped to match the outer shape of the lower frame. The lower bracket can provide the most basic support for the lower frame.

[0017] The beneficial effect of the present utility model is that a welding tooling for an electric vehicle long-tail bracket provided by the present utility model has a reasonable structural design. The lower support and elevation mechanism effectively supports the lower frame and elevates the pipe orifice of the lower frame. The upper pressing mechanism effectively presses and limits the upper frame in terms of height. The front abutting mechanism abuts and limits the pipe orifice of the upper frame. At the same time, the lateral support mechanism provides lateral support for the main support frame, effectively ensuring the accurate and reliable positioning of each component of the long-tail bracket, facilitating subsequent welding processing. Description of the Drawings

[0018] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of the long-tail bracket of the present utility model.

[0020] Figure 2 It is a schematic diagram of the optimal embodiment of the present utility model.

[0021] Figure 3 It is a schematic diagram of the lower frame positioning mechanism in the optimal embodiment of the present utility model.

[0022] Figure 4 It is a schematic diagram of the lower support and elevation mechanism in the optimal embodiment of the present utility model.

[0023] Figure 5 It is a schematic diagram of the upper frame positioning mechanism in the optimal embodiment of the present utility model.

[0024] Figure 6 It is a schematic diagram of the upper frame positioning mechanism and the lateral support mechanism in the optimal embodiment of the present utility model.

[0025] Figure 7It is a three-dimensional view of the upper frame positioning mechanism and the lateral support mechanism in the optimal embodiment of the present utility model.

[0026] Figure 8 It is a schematic diagram of the lateral positioning block in the optimal embodiment of the present utility model.

[0027] In the figure, 1. side support frame; 2. upper frame; 3. main support frame; 4. lower frame; 5. tooling base plate; 6. lower bracket; 7. lateral supporting block; 8. notch; 9. lateral positioning block; 10. quick clamp; 11. pipe orifice elevation block; 12. lower supporting bracket; 13. groove; 14. pipe orifice support frame; 15. U-shaped groove; 16. pipe orifice abutting positioning piece; 17. abutting positioning support; 18. upper pressing and fixing support; 19. sliding groove; 20. through hole; 21. clamp mounting block; 22. oblique quick clamp; 23. mating groove; 24. pressing slider. Detailed implementation mode

[0028] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic way. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following specific implementation mode is not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalent forms.

[0029] As Figure 2 shown, a welding tooling for an electric vehicle long-tail bracket is the optimal embodiment of the present utility model. This welding tooling is used to support and position the long-tail bracket.

[0030] In this embodiment, the long-tail bracket to be positioned and supported is as Figure 1 shown, including a lower frame 4, an upper frame 2, and a main support frame 3 and a side support frame 1 supported between the upper frame 2 and the lower frame 4.

[0031] As Figure 2 shown, the welding tooling includes a tooling base plate 5 and a lower frame positioning mechanism, an upper frame positioning mechanism, and a lateral support mechanism provided on the tooling base plate 5. At the same time, lower brackets 6 are respectively supported and provided at the lower ends of the lower frame 4 corresponding to the lower sides of both sides of the main support block on the tooling base plate 5; the bottom of the lower bracket 6 is fixed to the tooling base plate 5, and the top has a U-shaped mating groove 23 that is shaped to fit the outer shape of the lower frame 4. The lower frame 4 can be provided with the most basic support through the lower bracket 6.

[0032] Specifically, the structures of the lower frame positioning mechanism, the upper frame positioning mechanism, and the lateral support mechanism are respectively set as follows:

[0033] 1. Lower frame positioning mechanism:

[0034] As Figure 3 shown, lower frame positioning mechanisms are respectively provided at the positions on both sides of the pipe orifice corresponding to the lower frame 4. The lower frame positioning mechanisms on both sides have the same structure and are symmetrically distributed on both sides of the lower frame 4. Each side of the lower frame positioning mechanism respectively includes a lower support and elevation mechanism and a lateral propulsion mechanism. The lower support and elevation mechanism is supported below the lower frame 4 and elevates the front pipe orifice of the lower frame 4, and the lateral propulsion mechanism is arranged below the side of the lower frame 4 and propels and positions the lower frame 4 inward from the outside.

[0035] Specifically, the lateral propulsion mechanism includes a lateral positioning block 9, a quick clamp 10, and a lateral support block 7. The lateral positioning block 9 is arranged at the corner position of the U-shaped structure of the lower frame 4, and a groove 13 which is shaped to match the outer shape of the lower frame 4 is provided on the upper end surface of the lateral positioning block 9. The lower frame 4 is positioned in cooperation with the groove 13. When the quick clamp 10 of the lateral mechanism clamps, the clamping end of the quick clamp 10 is fixed to the lateral positioning block 9 and propels the lateral positioning block 9 toward the inner side of the opening of the lower frame 4 when clamping, ensuring positioning, and the propulsion process is fast and reliable.

[0036] The lateral propulsion mechanism further includes a lateral support block 7. The lateral support block 7 is arranged below the lateral positioning block 9, and there is a gap between the top of the lateral support block 7 and the bottom of the lateral positioning block 9 when the quick clamp 10 of the lateral propulsion mechanism clamps; when the quick clamp 10 of the lateral propulsion mechanism relaxes, the lateral positioning block 9 falls on the top of the lateral support block 7 and is supported by the lateral support block 7. The lateral support block 7 can provide support guarantee for the lower frame 4 and the lateral positioning block 9, and provide a limit for the lowest point of the lateral positioning block 9 in the height direction.

[0037] As Figure 4 shown, in the operation of elevating the pipe orifice of the lower frame 4, the lower support and elevation mechanism includes a lower support bracket 12, a pipe orifice elevation block 11, and a quick clamp 10; the lower support bracket 12 is fixed on the tooling bottom plate 5 and is arranged below the lateral positioning block 9 at the pipe orifice position of the lower frame 4; the pipe orifice elevation block 11 is fixed to the clamping end of the quick clamp 10 of the lower support and elevation mechanism, and the lower bottom surface of the pipe orifice elevation block 11 is an inclined surface. When the quick clamp 10 of the lower support and elevation mechanism clamps, the pipe orifice of the lower frame 4 is placed on the upper end surface of the pipe orifice elevation block 11 and the pipe orifice is elevated by the pipe orifice elevation block 11.

[0038] As Figure 8 shown, in the actual design, the actual position of the pipe orifice elevation block 11 is above the groove 13 of the lateral positioning block 9 at the pipe orifice position of the lower frame 4. For the convenience of the entry and propulsion of the pipe orifice elevation block 11, a notch 8 for the passage of the pipe orifice positioning block is provided on the side surface of the groove 13 of the lateral positioning block 9, and the bottom of the groove 13 of the lateral positioning block 9 is an inclined surface that cooperates with the lower bottom surface of the pipe orifice elevation block 11.

[0039] 2. Upper frame positioning mechanism:

[0040] The upper frame positioning mechanism includes a front abutting mechanism and an upper pressing mechanism. At the positions of the two side pipe orifices of the upper frame 2, there is a front abutting mechanism for supporting and positioning the pipe orifices of the upper frame 2, and the upper pressing mechanism is arranged above the position where the upper frame 2 corresponds to connecting the main support frame 3, and the upper pressing mechanism is limited and pressed above the upper frame 2.

[0041] As Figure 5 shown, in the positioning of the upper frame 2, the position of the pipe orifice of the upper frame 2 is limited by the front abutting mechanism. The front abutting mechanism includes a pipe orifice support frame 14, a pipe orifice abutting and positioning piece 16, and a quick clamp 10; the bottom of the pipe orifice support frame 14 is fixed to the tooling bottom plate 5, and the top has a U-shaped groove 15 for supporting and clamping the pipe orifice of the upper frame 2; the pipe orifice abutting and positioning piece 16 is fixed to the clamping end of the quick clamp 10 of the front abutting mechanism. When the quick clamp 10 of the front abutting mechanism is tightened, the pipe orifice abutting and positioning piece 16 is pressed against the pipe orifice of the upper frame 2.

[0042] The front abutting mechanism further includes an abutting and positioning support 17. The bottom of the abutting and positioning support 17 is fixed to the tooling bottom plate 5, and the top is correspondingly arranged at the inner side position of the pipe orifice of the upper frame 2. The pipe orifice abutting and positioning piece 16 is of an angle iron structure. The clamping end of the quick clamp 10 of the front abutting mechanism is fixed to the inner side surface of the angle iron structure. When the quick clamp 10 of the front abutting mechanism is tightened, the outer side surface of one corner edge of the angle iron structure is pressed against the pipe orifice of the upper frame 2, and the outer side surface of the other corner edge is pressed against and limited by the abutting and positioning support 17. Through the cooperative setting of the pipe orifice abutting and positioning piece 16 and the abutting and positioning support 17, when tightened, the pipe orifice abutting and positioning piece 16 can limit the pipe orifice of the upper frame 2, and the pipe orifice abutting and positioning piece 16 itself is limited by the abutting and positioning support 17, further ensuring the accurate positioning of the pipe orifice of the upper frame 2.

[0043] As Figure 6 and Figure 7 shown, the positioning of the upper frame 2 in the vertical direction is limited by the upper pressing mechanism. The upper pressing mechanism includes an upper pressing fixed support 18, a pressing slider 24, and a quick clamp 10; the lower end of the upper pressing fixed support 18 is fixed to the tooling bottom plate 5. A vertical sliding groove 19 is opened on the side surface of the upper pressing fixed support 18 close to the upper frame 2. The pressing slider 24 is slidably arranged in the sliding groove 19. The outer shape of the lower end surface of the pressing slider 24 is in imitation fit with the outer shape of the upper frame 2. The clamping head end of the quick clamp 10 of the upper pressing mechanism is fixed to the pressing slider 24. When the quick clamp 10 of the upper pressing mechanism is tightened, the lower end surface of the pressing slider 24 is pressed against the upper frame 2.

[0044] 3. Lateral support mechanism:

[0045] The lateral support mechanism is arranged below the outer side of the main support frame 3, and the lateral support mechanism jacks up and supports the main support frame 3 obliquely upward from the outer side surface of the main support frame 3.

[0046] As Figure 6 and Figure 7 shown, in this embodiment, the diagonal positioning support of the main support frame 3 is realized by a lateral support mechanism. The lateral support mechanism includes a diagonal quick clamp 22 and a clamp mounting block 21. The diagonal quick clamp 22 is fixed on the clamp mounting block 21. The chuck end of the diagonal quick clamp 22 is set to abut against the main support frame 3 from the obliquely downward direction when tightened. A through hole 20 is formed in the upper pressing and fixing frame, and the clamp mounting block 21 is fixedly installed in the through hole 20 by bolts. By applying an obliquely upward abutting support to the main support frame 3 through the lateral support mechanism and cooperating with the limiting pressing down of the upper frame 2, the positioning operation of the main support frame 3 can be completed, facilitating subsequent welding processing.

[0047] In the selection of the overall welding fixture, the type and model of the quick clamp 10 can be selected according to the clamping requirements, including but not limited to commercially available quick clamps. When installing the quick clamp 10, the position height of different positioning support mechanisms can be corresponded to provide a mounting support frame for the quick clamp 10. The bottom of the mounting support frame is fixed to the fixture base plate 5 to realize the positioning setting of the quick clamp 10.

[0048] When welding the long-tail bracket of the electric vehicle is required, corresponding to the lower frame positioning mechanism, the lower frame 4 is placed in the lateral positioning block 9 correspondingly, and the two sides of the lower frame 4 are pushed inward by the quick clamp 10 of the lateral propulsion mechanism. The pipe orifice of the lower frame 4 is located in the lateral positioning block 9. At this time, the quick clamp 10 of the lower supporting and heightening mechanism is used to clamp and push the pipe orifice heightening block 11. The pipe orifice heightening block 11 extends under the pipe orifice of the lower frame 4, and the pipe orifice of the lower frame 4 is heightened along with the surface height of the pipe orifice heightening block 11. The upper frame 2 is located above the lower frame 4 supported by the main support frame 3 and the side support frame 1. The height of the upper frame 2 is tightly limited vertically by the upper pressing mechanism. The pipe orifice of the upper frame 2 is supported by the pipe orifice support frame 14 and abutted and limited by the pipe orifice abutting piece 16. The upper end of the main support frame 3 is limited by the upper frame 2 and the lower end is supported by the lower frame 4. After the upper frame 2 and the lower frame 4 are both stably positioned, the lateral support mechanism provides an obliquely upward abutting force to realize the effective support and positioning of the main support frame 3. In this way, the positioning operation of each component of the long-tail bracket is completed, providing effective support for the subsequent welding process.

[0049] Taking the above ideal embodiment based on the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A welding tool for a long-tail bracket of an electric vehicle, used for supporting and positioning the long-tail bracket, wherein the long-tail bracket comprises a lower frame (4), an upper frame (2), and a main support frame (3) and a side support frame (1) supported between the upper frame (2) and the lower frame (4), characterized in that: It comprises a tooling base plate (5) and a lower frame positioning mechanism, an upper frame positioning mechanism and a lateral support mechanism arranged on the tooling base plate (5); The lower frame (4) is provided with lower frame positioning mechanisms at positions on both sides of the corresponding pipe openings, and the lower frame positioning mechanisms include a lower support and padding mechanism and a lateral propulsion mechanism. The lower support and padding mechanism is supported and arranged below the lower frame (4) and pads the front pipe opening of the lower frame (4). The lateral propulsion mechanism is arranged below the side of the lower frame (4) and pushes the lower frame (4) inward from the outside to position it. The upper frame positioning mechanism comprises a front abutment mechanism and an upper pressing mechanism. The upper frame (2) is provided with a front abutment mechanism at the positions of the pipe openings on both sides thereof for supporting and positioning the pipe openings of the upper frame (2). The upper pressing mechanism is arranged above the position of the upper frame (2) corresponding to the connection with the main support frame (3). The upper pressing mechanism is limitedly pressed above the upper frame (2). The lateral support mechanism is arranged below the outer side of the main support frame (3), and the lateral support mechanism supports the main support frame (3) obliquely upward from the outer side surface of the main support frame (3).

2. The welding tool for the long-tail bracket of an electric vehicle according to claim 1, characterized in that: The lateral pushing mechanism comprises a lateral positioning block (9) and a quick clamp (10); the lateral positioning block (9) is arranged at a corner position of the U-shaped structure of the lower frame (4), and the upper end surface of the lateral positioning block (9) has a groove (13) arranged in the shape of the lower frame (4), the lower frame (4) cooperates with the groove (13) for positioning, and the clamping head end of the quick clamp (10) is fixed to the lateral positioning block (9) and pushes the lateral positioning block (9) toward the inner side of the opening of the lower frame (4) when clamping.

3. The welding tool for the long tail bracket of an electric vehicle as claimed in claim 2, characterized in that: The lateral propulsion mechanism further comprises a lateral support block (7), wherein the lateral support block (7) is arranged below the lateral positioning block (9), and when the quick clamp (10) of the lateral propulsion mechanism is clamped, there is a gap between the top of the lateral support block (7) and the bottom of the lateral positioning block (9); when the quick clamp (10) of the lateral propulsion mechanism is released, the lateral positioning block (9) falls on the top of the lateral support block (7) and is supported by the lateral support block (7).

4. The welding tool for the long-tail bracket of an electric vehicle according to claim 1, characterized in that: The lower supporting and raising mechanism comprises a lower supporting bracket (12), a pipe mouth raising block (11) and a quick clamp (10); the lower supporting bracket (12) is fixed on the tooling base plate (5), and is arranged below the lateral positioning block (9) for the pipe mouth position of the lower frame (4); the pipe mouth raising block (11) is fixed on the clamping head end of the quick clamp (10) of the lower supporting and raising mechanism, and the lower bottom surface of the pipe mouth raising block (11) is an inclined surface. When the quick clamp (10) of the lower supporting and raising mechanism is clamped, the pipe mouth of the lower frame (4) is placed on the upper end surface of the pipe mouth raising block (11) and the pipe mouth is lifted by the pipe mouth raising block (11).

5. The welding tool for the long-tail bracket of an electric vehicle according to claim 1, characterized in that: The front abutment mechanism comprises a pipe mouth support frame (14), a pipe mouth abutment positioning piece (16) and a quick clamp (10); The bottom of the pipe opening support frame (14) is fixed to the tooling bottom plate (5), and the top is provided with a U-shaped groove (15) for supporting and clamping the pipe opening of the upper frame (2); The pipe mouth abutment positioning piece (16) is fixed on the clamping end of the quick clamp (10) of the front abutment mechanism. When the quick clamp (10) of the front abutment mechanism is clamped, the pipe mouth abutment positioning piece (16) is crimped with the pipe mouth of the upper frame (2).

6. The welding tool for the long-tail bracket of an electric vehicle as claimed in claim 5, characterized in that: The front abutment mechanism also includes an abutment positioning bracket (17), the bottom of which is fixed to the tooling bottom plate (5), and the top of which is arranged at a position corresponding to the inner side of the pipe mouth of the upper frame (2). The pipe mouth abutment positioning piece (16) is an angle iron structure, and the clamping end of the quick clamp (10) of the front abutment mechanism is fixed to the inner side of the angle iron structure. When the quick clamp (10) of the front abutment mechanism is clamped, the outer side of one corner of the angle iron structure is crimped to the pipe mouth of the upper frame (2), and the outer side of the other corner is crimped to the abutment positioning bracket (17) and limited by the abutment positioning bracket (17).

7. The welding tool for the long-tail bracket of an electric vehicle according to claim 1, characterized in that: The upper pressing mechanism comprises an upper pressing fixed bracket (18), a crimping slide block (24) and a quick clamp (10); the lower end of the upper pressing fixed bracket (18) is fixed on the tooling base plate (5); a vertical slide groove (19) is opened on the side of the upper pressing fixed bracket (18) close to the upper frame (2); the crimping slide block (24) is slidably arranged in the slide groove (19); the lower end surface shape of the crimping slide block (24) is configured to match the shape of the upper frame (2); the chuck end of the quick clamp (10) of the upper pressing mechanism is fixed to the crimping slide block (24); when the quick clamp (10) of the upper pressing mechanism is clamped, the lower end surface of the crimping slide block (24) is crimped on the upper frame (2).

8. The welding tool for the long-tail bracket of an electric vehicle as claimed in claim 7, characterized in that: The lateral support mechanism comprises an oblique quick clamp (22) and a clamp mounting block (21); the oblique quick clamp (22) is fixed on the clamp mounting block (21); the clamp head end of the oblique quick clamp (22) is pressed against the main support frame (3) from an oblique downward direction when tightened; a through hole (20) is formed on the upper pressure fixing bracket; and the clamp mounting block (21) is fixedly mounted in the through hole (20) by bolts.

9. The welding tool for the long-tail bracket of an electric vehicle according to claim 1, characterized in that: The tooling base plate (5) is provided with lower brackets (6) at the lower ends of the lower frame (4) below the two sides of the main support block. The bottom of the lower bracket (6) is fixed to the tooling base plate (5), and the top has a U-shaped matching groove (23) that is arranged in the same shape as the lower frame (4).

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