Stamping vehicle body skin supporting structure and assembling technology

By using elastic steel sheets, rectangular support tubes and expanding materials in the skin support structure, and combining with the reinforcement rubber plate to release electrophoretic stress, the skin flatness and consistency problems in the skin skin assembly of the fully stamped body are solved, and the skin is achieved Efficient and stable skin assembly and improve skin strength and sound insulation and noise reduction effects.

CN119078967APending Publication Date: 2024-12-06ZHONGTONG BUS HLDG
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Patent Information

Application Number
CN202411335499.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-24
Publication Date
2024-12-06

AI Technical Summary

Technical Problem

The appearance flatness and dimensional consistency of conventional passenger cars are difficult to ensure. Especially in the accidental and randomness of manual operation in full stamping body assembly, there are great challenges in the manufacturing accuracy and dimensional consistency of skin, which cannot effectively solve the appearance flatness of skin. question.

Method used

Using a skin support structure including elastic steel sheets, rectangular support tubes and expansion materials, by setting groove-like structures and gaps on the skin support column, the elastic steel sheets and expansion materials share the stress distribution of the skin, and during electrophoresis Release stress by reinforcing the plywood to ensure the flatness of the skin.

Benefits of technology

It realizes efficient and precise assembly of skin, improves the flatness and strength of skin, reduces the accidental impact of manual operation, improves production efficiency and product quality stability, and is suitable for mass production.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a stamping car body skin supporting structure and an assembly process, and belongs to the technical field of car skin assembly.The stamping car body skin supporting structure comprises a skin supporting column, a groove-shaped structure is arranged on the skin supporting column, an elastic steel sheet is arranged in the groove-shaped structure, and a supporting pipe is arranged on the side, away from the skin supporting column, of the elastic steel sheet; a gap is formed between the side, away from the elastic steel sheet, of the supporting pipe and the stamping skin and provided with an expansion material. According to the stamping vehicle body skin supporting structure and the assembling technology, an operator can conveniently and rapidly connect a stamping skin with the skin supporting columns through the whole assembling technology, meanwhile, the connecting precision and the skin flatness in the assembling process are guaranteed, the flatness of the stamping skin is effectively shared and supported through the elastic steel sheets and the rectangular supporting pipes, and the assembling efficiency is improved. The problem of uneven stress distribution of the skin is solved; meanwhile, the stress released by the stamping skin at high temperature during electrophoresis is dissolved and shared by the reinforcing rubber plate, so that good flatness of the stamping skin after electrophoresis is guaranteed.
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Description

Technical Field

[0001] The invention relates to the technical field of automobile skin assembly, and in particular to a stamping vehicle body skin support structure and an assembly process. Background Art

[0002] With the development of social economy, my country's bus manufacturing industry has made a qualitative leap, and customers' requirements for bus quality have gradually shifted from meeting basic performance to comfortable and beautiful appearance. Conventional buses are a frame plus skin structure, and the skin is generally a pure flat skin with a general overall shape. Nowadays, high-end brigade bus products have entered people's field of vision. They have unique shapes and use a fully stamped body, which has higher requirements for the accuracy of the frame and the smoothness of the skin appearance.

[0003] Conventional buses can use the skin expansion and drawing process to improve the skin appearance quality and meet the skin flatness and smoothness requirements. However, the fully stamped body side skin cannot meet the requirements of the expansion and drawing process. The skin appearance is mainly adjusted through manual operation. The contingency and randomness of manual operation make it very challenging to ensure the skin manufacturing accuracy and dimensional consistency. Manual operation cannot effectively solve the problem of skin appearance flatness. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a stamped car body skin support structure and an assembly process. The entire assembly process allows operators to quickly connect the stamped skin to the skin support column while ensuring the connection accuracy and skin flatness during assembly. The flatness of the stamped skin itself is effectively shared and supported by elastic steel sheets and rectangular support tubes, thereby solving the problem of uneven stress distribution of the skin itself. At the same time, the stress released by the stamped skin at high temperature during electrophoresis is shared by dissolving the reinforcing rubber sheet, thereby ensuring that the stamped skin maintains good flatness after electrophoresis and improving the flatness of the stamped skin appearance. This not only has high production efficiency and stable product quality, but is also not affected by the accidental and random nature of manual operation.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the present invention, a stamped car body skin support structure is provided, comprising a skin support column, a groove-shaped structure is provided on the skin support column, an elastic steel sheet is provided in the groove-shaped structure, a support tube is provided on the side of the elastic steel sheet away from the skin support column, a gap is provided between the side of the support tube away from the elastic steel sheet and the stamped skin, and an expansion material is provided in the gap.

[0007] In some embodiments of the present invention, a reinforcing rubber sheet is bonded to a side of the stamped skin close to the support tube, and the support tube is connected to the stamped skin with the reinforcing rubber sheet via an expansion material.

[0008] In some embodiments of the present invention, the elastic steel sheet includes a connecting structure, a supporting structure, and an L-shaped bracket. The connecting structure is connected to the skin support column, and the supporting structure and the L-shaped bracket abut against the supporting tube for support.

[0009] In some embodiments of the present invention, the connection structure is configured as a planar structure welded to a skin support column.

[0010] In some embodiments of the present invention, the support structure includes two support claws, and the two support claws respectively support the support tube along the length direction of the support tube.

[0011] In some embodiments of the present invention, an L-shaped bracket is provided at the bottom end of the connecting structure, and the L-shaped bracket abuts against the bottom end of the supporting tube.

[0012] In some embodiments of the present invention, the support tube is configured as a rectangular structure, and the support tube is perpendicular to the arrangement direction of the skin support column.

[0013] In some embodiments of the present invention, one side of the expansion material is bonded to the stamped skin, and the other side is bonded to the support tube, and the centers of the connection between the expansion material and the support tube in the width direction are aligned.

[0014] In some embodiments of the present invention, the elastic steel sheet is aligned with the center of the support tube in the width direction.

[0015] In a second aspect of the present invention, there is provided an assembly process for a stamped vehicle body skin support structure, comprising:

[0016] After the stamped skin is fixed, a reinforcing rubber sheet is bonded to the side close to the skin support column;

[0017] Make an arc template according to the skin support column, find the center position of the connection with the support tube on the stamped skin according to the arc template, align the expansion material with the center of the support tube, and bond the expansion material at the connection between the support tube and the stamped skin to connect the support tube and the stamped skin, and maintain the bonding straightness;

[0018] An elastic steel sheet is welded on the skin support column, and the elastic steel sheet and the support tube are aligned in the center for abutment support.

[0019] One or more technical solutions of the present invention have the following beneficial effects:

[0020] The present invention provides a stamped car body skin support structure and assembly process. The entire assembly process facilitates operators to quickly connect the stamped skin with the skin support column, while ensuring the connection accuracy and skin flatness during assembly.

[0021] An elastic steel sheet that can absorb stress is arranged between the stamped skin and the skin support column. The elastic steel sheet is welded on the skin support column and together with the expansion material, effectively supports the skin. After the stamped skin and the skin support column are assembled, its own flatness is effectively shared and supported by the elastic steel sheet and the rectangular support tube, thereby solving the problem of uneven stress distribution of the skin itself. At the same time, the stress released by the high temperature of the stamped skin during electrophoresis is shared by dissolving the reinforcing rubber sheet, thereby ensuring that the stamped skin maintains good flatness after electrophoresis.

[0022] The skin support structure provided by the present invention can enhance the skin strength and improve the sound insulation and noise reduction effect of the skin. When the stamped skin is assembled, the spring steel sheets, rectangular support tubes and expansion materials will not change their corresponding positions. Not only is the production efficiency high and the product quality stable, but it is also not affected by the accidental and random nature of manual operation.

[0023] The skin support structure provided by the present invention has reasonable design, simple construction process and operation, and is suitable for mass production and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a stamped vehicle body skin support structure provided by Example 1 of the present invention;

[0025] Figure 2 A schematic diagram of the partial structure of the elastic steel sheet and the rectangular support tube provided in Example 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of assembling the skin support column and the stamped skin provided in Example 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of the elastic steel sheet structure provided in Example 1 of the present invention.

[0028] In the figure: 1. Skin support column; 2. Elastic steel sheet; 21. Connection structure; 22. Support structure; 23. L-shaped bracket; 3. Support pipe; 4. Expansion material; 5. Reinforcement rubber sheet; 6. Stamped skin. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1

[0031] In a typical embodiment of the present invention, a stamped car body skin support structure is proposed, including a skin support column 1, a groove-like structure is provided on the skin support column 1, an elastic steel sheet 2 is provided in the groove-like structure, a support tube 3 is provided on the side of the elastic steel sheet 2 away from the skin support column 1, a gap is provided between the side of the support tube 3 away from the elastic steel sheet 2 and the stamped skin 6, and an expansion material 4 is provided in the gap.

[0032] In this embodiment, two groove structures are respectively provided on the upper and lower sides of the skin support column 1, and elastic steel sheets 2 are respectively provided in the two groove structures, and the two elastic steel sheets 2 are respectively abutted against the support tube 3 on the side away from the skin support column 1. By providing an elastic steel sheet 2 with elasticity and stress absorption between the stamped skin 6 and the skin support column 1, the elastic steel sheet 2 is attached to the rectangular support tube 3 and the expansion material 4 to effectively support the skin, and the flatness of the stamped skin 6 itself is effectively shared and supported by the elastic steel sheet 2 and the rectangular support tube 3, thereby solving the problem of uneven stress distribution of the skin itself.

[0033] Furthermore, a reinforcing rubber sheet 5 is bonded to one side of the stamped skin 6 close to the support tube 3, and the support tube 3 is connected to the stamped skin 6 with the reinforcing rubber sheet 5 through the expansion material 4. The release of the stamping stress of the stamped skin 6 during electrophoresis is not conducive to the smoothness of the skin appearance. The stress released at high temperature during electrophoresis can be dissolved and shared by the reinforcing rubber sheet 5, ensuring that the stamped skin 6 maintains good smoothness after electrophoresis.

[0034] Furthermore, the elastic steel sheet 2 includes a connection structure 21, a support structure 22, and an L-shaped bracket 23. The connection structure 21 is connected to the skin support column 1, and the support structure 22 and the L-shaped bracket 23 support the support tube 3. In this embodiment, the support structure 22 supports the support tube 3 along the length direction, and the L-shaped bracket 23 supports the support tube 3 at the bottom of the support tube 3, so as to ensure that the support tube 3 is stably supported by the elastic steel sheet 2 during the left and right movement, and will not move up and down.

[0035] Furthermore, the connection structure 21 is configured to be welded between a plane structure and the skin support column 1. In this embodiment, a positioning hole is provided on the plane structure to facilitate accurate finding of the welding position, and the elastic steel sheet 2 is welded to the skin support column 1 through the plane structure, which facilitates welding and can achieve a stable connection between the two by full welding. In addition, the welding of the skin support column 1 and the elastic steel sheet 2 can compensate for the straightness error of the stamped frame, and effectively compensate for the problem of straightness deviation in the welding process of the stamped frame.

[0036] Furthermore, the support structure 22 includes two support claws, and the two support claws respectively support the support tube 3 along the length direction of the support tube 3.

[0037] Furthermore, an L-shaped bracket 23 is provided at the bottom end of the connecting structure 21 , and the L-shaped bracket 23 abuts against the bottom end of the supporting tube 3 .

[0038] The two support claws utilize elastic deformation to perform a sequential movement of contraction and expansion, cooperating with the left and right movement of the support tube 3 to support the support tube 3; the L-shaped bracket 23 at the bottom end of the elastic steel sheet 2 lifts the support tube 3 to prevent the support tube 3 from sagging and straightness deviation.

[0039] In this embodiment, an L-shaped bracket 23 is connected to the bottom end of the elastic steel sheet 2. The length of the L-shaped bracket 23 is less than the length of the supporting structure 22. The upper surface of one end of the L-shaped bracket 23 is abutted against the lower end surface of the supporting tube 3 for support. The other end of the L-shaped bracket 23 is vertically arranged downward. When the supporting tube 3 moves toward the elastic steel sheet 2, the two supporting claws of the elastic steel sheet 2 extend along the length direction of the supporting tube 3. At this time, the supporting tube 3 remains stable when moving left and right on the L-shaped bracket 23. At the same time, the end vertically arranged downward is parallel to the stamped skin 6. When the stamped skin 6 is too close to the elastic steel sheet 2, it can effectively abut against the stamped skin 6 to prevent structural damage and avoid leaving extrusion marks on the stamped skin 6.

[0040] The elastic steel sheet 2 is arranged in this way, so as to prevent the rectangular support tube 3 from sagging or falling when connected to the rectangular support tube 3.

[0041] Furthermore, one side of the expansion material 4 is bonded to the stamped skin 6, and the other side is bonded to the support tube 3, and the width direction center of the connection between the expansion material 4 and the support tube 3 is aligned. The expansion material 4 is bonded to the outer wall of the support tube 3, and the thickness of the expansion material 4 after expansion can make up for the gap between the skin support column 1 and the skin to prevent deformation.

[0042] Furthermore, the elastic steel sheet 2 is aligned with the center of the support tube 3 in the width direction.

[0043] In a second aspect of the present invention, there is provided an assembly process for a stamped vehicle body skin support structure, comprising:

[0044] After the stamped skin 6 is fixed, a reinforcing rubber sheet 5 is bonded to the side close to the skin support column 1;

[0045] According to the skin support column 1, an arc template is prepared, and the center position of the connection with the support tube 3 is found on the stamped skin 6 according to the arc template. After the expansion material 4 is aligned with the center of the support tube 3, the expansion material 4 is bonded at the connection between the support tube 3 and the stamped skin 6 to connect the support tube 3 and the stamped skin 6, and the bonding straightness is maintained;

[0046] An elastic steel sheet 2 is welded on the skin support column 1, and the elastic steel sheet 2 and the support tube 3 are centered and aligned to provide abutment support.

[0047] Before the stamped skin 6 is electrophoresed, the stamped skin 6 support structure 22 and construction process are completed, which effectively alleviates the deformation, wave and dent problems of the large surface of the skin caused by high temperature baking of electrophoresis.

[0048] The present invention provides a stamped car body skin support structure and assembly process. The entire assembly process facilitates operators to quickly connect the stamped skin with the skin support column, while ensuring the connection accuracy and skin flatness during assembly.

[0049] An elastic steel sheet that is elastic and can absorb stress is set between the stamped skin and the skin support column. The elastic steel sheet is welded to the rectangular support tube through positioning holes and together with the expansion material, effectively supports the skin. In the later stage of assembly of the stamped skin and the skin support column, the flatness of the stamped skin and the skin support column is effectively shared and supported by the elastic steel sheet and the rectangular support tube, thereby solving the problem of uneven stress distribution of the skin itself. At the same time, the stress released by the high temperature of the stamped skin during electrophoresis is shared by dissolving the reinforcing rubber sheet, thereby ensuring that the stamped skin maintains good flatness after electrophoresis.

[0050] The skin support structure provided by the present invention can enhance the skin strength and improve the sound insulation and noise reduction effect of the skin. When the stamped skin is assembled, the spring steel sheets, rectangular support tubes and expansion materials will not change their corresponding positions. Not only is the production efficiency high and the product quality stable, but it is also not affected by the accidental and random nature of manual operation.

[0051] The skin support structure provided by the present invention has reasonable design, simple construction process and operation, and is suitable for mass production and application.

[0052] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A stamped car body skin support structure, characterized in that: It comprises a skin support column, on which a groove structure is provided, in which an elastic steel sheet is provided, a support tube is provided on the side of the elastic steel sheet away from the skin support column, a gap is provided between the side of the support tube away from the elastic steel sheet and the stamped skin, and an expansion material is provided in the gap.

2. A stamped car body skin support structure as claimed in claim 1, characterized in that: A reinforcing rubber sheet is bonded to one side of the stamped skin close to the support tube, and the support tube is connected to the stamped skin with the reinforcing rubber sheet through an expansion material.

3. A stamped car body skin support structure as claimed in claim 1, characterized in that: The elastic steel sheet comprises a connecting structure, a supporting structure and an L-shaped bracket. The connecting structure is connected to the skin supporting column. The supporting structure and the L-shaped bracket abut against the supporting tube for support.

4. A stamped car body skin support structure as claimed in claim 3, characterized in that: The connection structure is configured as a plane structure welded to a skin support column.

5. A stamped car body skin support structure as claimed in claim 3, characterized in that: The support structure comprises two support claws, and the two support claws respectively support the support tube along the length direction of the support tube.

6. A stamped car body skin support structure as claimed in claim 3, characterized in that: An L-shaped bracket is disposed at the bottom end of the connecting structure, and the L-shaped bracket abuts against the bottom end of the supporting tube.

7. A stamped car body skin support structure as claimed in claim 1, characterized in that: The support tube is arranged as a rectangular structure, and the arrangement direction of the support tube and the skin support column is perpendicular.

8. A stamped car body skin support structure as claimed in claim 1, characterized in that: One side of the expansion material is bonded to the stamping skin, and the other side is bonded to the support tube. The centers of the connection between the expansion material and the support tube in the width direction are aligned.

9. A stamped car body skin support structure as claimed in claim 1, characterized in that: The elastic steel sheet is aligned with the center of the support tube in the width direction.

10. An assembly process for a stamped vehicle body skin support structure according to any one of claims 1 to 9, characterized in that: include: After the stamped skin is fixed, a reinforcing rubber sheet is bonded to the side close to the skin support column; Make an arc template according to the skin support column, find the center position of the connection with the support tube on the stamped skin according to the arc template, align the expansion material with the center of the support tube, and bond the expansion material at the connection between the support tube and the stamped skin to connect the support tube and the stamped skin, and maintain the bonding straightness; An elastic steel sheet is welded on the skin support column, and the elastic steel sheet and the support tube are aligned in the center for abutment support.