Aluminum alloy profile splicing structure of light-weight automobile body and forming process

Abstract

The invention belongs to the technical field of automobile body splicing, and particularly relates to an aluminum alloy section splicing structure of a light-weight automobile body and a forming process, the aluminum alloy section splicing structure comprises an automobile frame and an automobile roof, the automobile frame and the automobile roof are assembled and connected through a splicing assembly, and an upper edge beam and a top plate cross beam at the top end of the automobile frame are fixedly connected with welding convex points respectively. A slot is formed in a roof side rail at the top end of the frame, a welding hole is formed in a frame of the roof, the end part of the roof is fixedly connected with an insertion block, the insertion block is used for being embedded into the slot, and positioning holes are respectively formed in the roof side rail at the top end of the frame and a roof cross beam; through the arrangement of the splicing assembly, a traditional alignment mode depending on a clamp and manual adjustment is abandoned, automatic and accurate alignment of the vehicle frame and the vehicle roof can be achieved, the problem of welding deviation caused by inaccurate alignment is effectively avoided, it is ensured that the assembly precision of all parts of the vehicle body reaches the high level, and the overall appearance quality of the vehicle body is improved; and the appearance of the automobile is more exquisite and attractive.

Description

Technical Field

[0001] This invention belongs to the field of vehicle body splicing technology, specifically referring to the aluminum alloy profile splicing structure and forming process for lightweight vehicle bodies. Background Technology

[0002] The car body is a crucial structural assembly that carries passengers and cargo, houses various car components, and provides operating space for the driver. It not only needs sufficient strength and rigidity to ensure driving safety, but also has a key impact on the car's lightweight design and aerodynamic performance.

[0003] In traditional automobile manufacturing, the assembly structure of the car body, especially the frame and roof, has many shortcomings. Currently, the common connection method requires meticulous drilling of holes in the roof frame, a process demanding extremely high precision; even slight deviations can affect subsequent assembly. After drilling, complex and bulky jigs are used to glue and fix the roof to the body. This step is not only cumbersome and highly dependent on the worker's skill and experience, but also consumes a significant amount of time and manpower. More importantly, during the subsequent welding of the roof to the frame, the initial fixing method makes it difficult to ensure absolutely precise alignment between the frame and roof, easily leading to welding deviations. These deviations not only affect the overall appearance quality of the car body, reducing its refinement, but also adversely impact the structural strength and stability of the body, ultimately threatening driving safety. Summary of the Invention

[0004] In response to the above situation, in order to reduce pipeline structure and reduce energy consumption and equipment costs, the present invention provides a lightweight aluminum alloy profile splicing structure for automobile bodies.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a lightweight aluminum alloy profile splicing structure for automobile body, including a frame and a roof, wherein the frame and the roof are assembled and connected by splicing components.

[0006] Furthermore, the upper side beam and the top plate crossbeam at the top of the frame are respectively fixedly connected to welding protrusions, and the upper side beam at the top of the frame has slots.

[0007] Furthermore, welding holes are provided on the frame of the roof, and a connecting block is fixedly connected to the end of the roof.

[0008] Furthermore, the insert is used to be embedded in the slot.

[0009] Furthermore, positioning holes are respectively provided on the upper side beam and the top plate crossbeam at the top of the frame.

[0010] Furthermore, the splicing assembly includes a fixing protrusion, which is fixedly welded inside the frame of the roof. A first elastic alloy sheet is fixedly welded to one side of the lower end of the fixing protrusion, and a first wedge is fixedly connected to the side wall of the first elastic alloy sheet. A second elastic alloy sheet is fixedly welded to the other side of the lower end of the fixing protrusion, and a second wedge is fixedly connected to the side wall of the second elastic alloy sheet. An extrusion groove is provided between the first elastic alloy sheet and the second elastic alloy sheet.

[0011] Furthermore, the first wedge and the second wedge are used to insert into the positioning hole.

[0012] Furthermore, the vehicle frame is made of aluminum alloy, and the roof is made of aluminum alloy.

[0013] Furthermore, the first wedge is a triangular wedge that is wider at the top and narrower at the bottom, and the second elastic alloy sheet is a triangular wedge that is wider at the top and narrower at the bottom.

[0014] This solution also discloses the forming process of the aluminum alloy profile splicing structure for lightweight automotive bodies, which mainly includes the following steps: Step 1: When assembling the vehicle body, apply adhesive to the upper side beam and the top plate crossbeam at the top of the frame; Step Two: Next, align the welding holes on the roof with the welding protrusions on the frame, align the inserts on the roof with the slots on the frame, align the splicing components with the positioning holes, insert the inserts into the slots, insert the positioning holes into the welding holes, and when the first and second wedges are inserted into the positioning holes, the first and second wedges move closer to each other, and the first and second elastic alloy sheets deform until the first and second wedges enter the lower end of the positioning holes. At this time, the first and second elastic alloy sheets reset, and the upper ends of the first and second wedges lock the lower end of the positioning holes, so that the roof fits tightly against the top of the frame. Step 3: This facilitates later welding of the welding protrusions and holes by workers using welding machines to complete the splicing of the frame and roof.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: The present invention provides a lightweight aluminum alloy profile splicing structure for automobile bodies, achieving the following beneficial effects: (1) The splicing components abandon the traditional alignment method that relies on clamps and manual adjustment. It can achieve automatic and accurate alignment between the frame and the roof, effectively avoiding welding deviation caused by inaccurate alignment, ensuring that the assembly accuracy of each part of the vehicle body reaches a high level, improving the overall appearance quality of the vehicle body, and making the car appearance more exquisite and beautiful.

[0016] (2) Compared with the traditional complex process of drilling holes, fixing with clamps, and welding, the splicing components reduce the drilling process and the dependence on clamps. The installation steps are simpler and more efficient, which greatly shortens the installation time, reduces the labor intensity of workers, and improves the overall production efficiency of the automobile production line.

[0017] (3) The splicing components make the connection between the frame and the roof more compact and secure, forming a stable integrated structure.

[0018] (4) The setting of welding protrusions and welding holes, precise alignment and stable splicing provide good conditions for subsequent welding, making the welding points evenly distributed and the welding penetration consistent, reducing the generation of welding defects such as porosity and cracks, thereby improving the welding quality, enhancing the connection strength of key parts of the vehicle body, and extending the service life of the vehicle body.

[0019] (5) The frame is made of aluminum alloy and the roof is made of aluminum alloy. The physical and chemical properties of aluminum alloy are fully considered, which can give full play to the advantages of aluminum alloy in terms of lightweight and high strength. While achieving lightweight body, it ensures that the splicing structure is perfectly matched with the aluminum alloy material and will not affect the splicing effect and body performance due to the material properties. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the aluminum alloy profile splicing structure for the lightweight automobile body proposed in this invention. Figure 2 This is a top view of the vehicle frame; Figure 3 This is a top view of the vehicle's roof. Figure 4 This is a top-down view of the vehicle's roof. Figure 5 This is a schematic diagram of the roof structure; Figure 6 for Figure 5 Enlarged view of part A in the middle; Figure 7 This is a diagram illustrating the splicing status of the splicing components. Figure 1 ; Figure 8 This is a diagram illustrating the splicing status of the splicing components. Figure 2 .

[0021] Among them, 1. frame, 2. roof, 3. splicing component, 4. welding protrusion, 5. slot, 6. welding hole, 7. insert, 8. positioning hole, 9. fixing protrusion, 10. first elastic alloy sheet, 11. first wedge, 12. second elastic alloy sheet, 13. second wedge, 14. extrusion groove.

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] like Figures 1-8 As shown, this invention proposes a lightweight aluminum alloy profile splicing structure for a car body, including a frame 1 and a roof 2. The frame 1 is made of aluminum alloy, and the roof 2 is also made of aluminum alloy. The upper side beam and the roof crossbeam at the top of the frame 1 are respectively fixedly connected to welded protrusions 4. A slot 5 is formed in the upper side beam at the top of the frame 1, and welding holes 6 are formed in the frame of the roof 2. An insert 7 is fixedly connected to the end of the roof 2, and the insert 7 is used to embed into the slot 5. The frame 1 and the roof 2 are assembled and connected by a splicing assembly 3, which includes a fixing protrusion 9. The fixing protrusion 9 is fixedly welded inside the frame of the roof 2, and the lower end of the fixing protrusion 9... A first elastic alloy sheet 10 is fixedly welded to the side, and a first wedge 11 is fixedly connected to the side wall of the first elastic alloy sheet 10. A second elastic alloy sheet 12 is fixedly welded to the other side of the lower end of the fixing protrusion 9, and a second wedge 13 is fixedly connected to the side wall of the second elastic alloy sheet 12. An extrusion groove 14 is provided between the first elastic alloy sheet 10 and the second elastic alloy sheet 12. Positioning holes 8 are respectively opened on the upper side beam and the top plate crossbeam at the top of the frame 1. The first wedge 11 and the second wedge 13 are used to be inserted into the positioning holes 8. The first wedge 11 is a triangular wedge that is wider at the top and narrower at the bottom, and the second elastic alloy sheet 12 is a triangular wedge that is wider at the top and narrower at the bottom.

[0026] In practical use, during the assembly of the vehicle body, after applying adhesive to the upper side beam and roof crossbeam at the top of the frame 1, the welding holes 6 of the roof 2 are aligned with the welding protrusions 4 on the frame 1, the inserts 7 on the roof 2 are aligned with the slots 5 on the frame 1, the assembly assembly 3 is aligned with the positioning holes 8, and the inserts 7 are inserted into the slots 5. The positioning holes 8 are inserted into the welding holes 6. When the first wedge 11 and the second wedge 13 are inserted into the positioning holes 8, the first wedge 11 and the second wedge 13 move closer to each other. The first elastic alloy sheet 10 and the second... The elastic alloy sheet 12 deforms until the first wedge 11 and the second wedge 13 enter the lower end of the positioning hole 8. At this time, the first elastic alloy sheet 10 and the second elastic alloy sheet 12 are reset, and the upper ends of the first wedge 11 and the second wedge 13 are stuck to the lower end of the positioning hole 8, so that the roof 2 is tightly attached to the top of the frame 1, which makes it easier for workers to use a welding machine to weld the welding protrusion 4 and the welding hole 6 to complete the splicing of the frame 1 and the roof 2. The above is the overall working process of the present invention. This step can be repeated next time it is used.

[0027] As can be seen from the above embodiments, the beneficial effects of the present invention are as follows: The use of splicing components eliminates the traditional alignment method that relies on clamps and manual adjustments. It enables automatic and precise alignment of the chassis and roof, effectively avoiding welding deviations caused by inaccurate alignment. This ensures a high level of assembly precision for all body components, improving the overall appearance quality and making the car more refined and aesthetically pleasing. Compared to the complex traditional process of drilling, clamping, and welding, the splicing components reduce drilling and reliance on clamps, making the installation process simpler and more efficient. This significantly shortens installation time, reduces worker workload, and improves the overall production efficiency of the automotive production line. The splicing components also ensure a tighter connection between the chassis and roof. The robust design forms a stable, integrated structure. The precise alignment and secure splicing of the welding protrusions and holes provide excellent conditions for subsequent welding, ensuring uniform distribution of welding points and consistent weld penetration. This reduces welding defects such as porosity and cracks, thereby improving welding quality, enhancing the connection strength of key parts of the vehicle body, and extending the vehicle's service life. The frame and roof are both made of aluminum alloy, taking full account of the physical and chemical properties of aluminum alloy. This fully leverages the advantages of aluminum alloy's lightweight and high strength, achieving a lightweight vehicle body while ensuring a perfect fit between the splicing structure and the aluminum alloy material. The material properties will not affect the splicing effect or vehicle performance.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A lightweight automotive body aluminum alloy profile splicing structure, including a frame (1) and a roof (2), characterized in that: The frame (1) and the roof (2) are assembled and connected by splicing components (3).

2. The lightweight automotive body aluminum alloy profile splicing structure according to claim 1, characterized in that: The upper side beam and the top plate crossbeam at the top of the frame (1) are respectively fixedly connected to the welding protrusions (4), and the upper side beam at the top of the frame (1) has a slot (5).

3. The lightweight automotive body aluminum alloy profile splicing structure according to claim 2, characterized in that: Welding holes (6) are opened on the frame of the roof (2), and the end of the roof (2) is fixedly connected to the plug (7).

4. The lightweight automotive body aluminum alloy profile splicing structure according to claim 3, characterized in that: The insert (7) is used to be embedded in the slot (5).

5. The lightweight automotive body aluminum alloy profile splicing structure according to claim 4, characterized in that: Positioning holes (8) are respectively opened on the upper side beam and the top plate crossbeam at the top of the frame (1).

6. The lightweight automotive body aluminum alloy profile splicing structure according to claim 5, characterized in that: The splicing assembly (3) includes a fixing protrusion (9). The fixing protrusion (9) is fixedly welded inside the frame of the roof (2). A first elastic alloy sheet (10) is fixedly welded to one side of the lower end of the fixing protrusion (9). A first wedge (11) is fixedly connected to the side wall of the first elastic alloy sheet (10). A second elastic alloy sheet (12) is fixedly welded to the other side of the lower end of the fixing protrusion (9). A second wedge (13) is fixedly connected to the side wall of the second elastic alloy sheet (12). An extrusion groove (14) is provided between the first elastic alloy sheet (10) and the second elastic alloy sheet (12).

7. The lightweight automotive body aluminum alloy profile splicing structure according to claim 6, characterized in that: The first wedge (11) and the second wedge (13) are used to be inserted into the positioning hole (8).

8. The lightweight automotive body aluminum alloy profile splicing structure according to claim 7, characterized in that: The frame (1) is made of aluminum alloy, and the roof (2) is made of aluminum alloy.

9. The lightweight automotive body aluminum alloy profile splicing structure according to claim 8, characterized in that: The first wedge (11) is a triangular wedge that is wider at the top and narrower at the bottom, and the second elastic alloy sheet (12) is a triangular wedge that is wider at the top and narrower at the bottom.

10. A forming process for a lightweight automotive body aluminum alloy profile splicing structure, as described in claim 9, characterized in that, The main steps include the following: Step 1: When assembling the vehicle body, apply glue to the top beam and the top plate crossbeam at the top of the frame (1); Step 2: Then, using the welding hole (6) on the roof (2) to align with the welding protrusion (4) on the frame (1), the insert (7) on the roof (2) to align with the slot (5) on the frame (1), the splicing component (3) to align with the positioning hole (8), insert the insert (7) into the slot (5), insert the positioning hole (8) into the welding hole (6), when the first wedge (11) and the second wedge (13) are inserted into the positioning hole (8), the first wedge (11) and the second wedge (13) approach each other, the first elastic alloy sheet (10) and the second elastic alloy sheet (12) deform until the first wedge (11) and the second wedge (13) enter the lower end of the positioning hole (8), at this time the first elastic alloy sheet (10) and the second elastic alloy sheet (12) reset, the upper end of the first wedge (11) and the second wedge (13) jams the lower end of the positioning hole (8), so that the roof (2) fits tightly against the top of the frame (1); Step 3: This facilitates the later use of welding machines by workers to weld the welding protrusions (4) and welding holes (6) to complete the splicing of the frame (1) and the roof (2).

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