CN-122009044-A - Car body corner sealing structure and stamping forming process method thereof

CN122009044ACN 122009044 ACN122009044 ACN 122009044ACN-122009044-A

Abstract

The invention discloses a vehicle body corner sealing structure and a stamping forming process method thereof, wherein the vehicle body corner sealing structure comprises a side wall outer plate, a running water trough plate, a first connecting assembly, a second connecting assembly and a sealing assembly, wherein the side wall outer plate is provided with an arc-shaped opening; the first connecting component comprises a connecting side wall, a connecting inclined plane and a side wall flange, wherein the first side of the connecting side wall is vertically connected with the side edge of the side wall outer plate, the second side of the connecting side wall is connected with the first side of the connecting inclined plane, the second side of the connecting inclined plane is connected with the side wall flange, the second connecting component is arranged at the end part of the running water trough plate, the side edge of the running water trough plate is connected with the arc-shaped opening of the side wall outer plate, the second connecting component is respectively connected with the connecting side wall, the connecting inclined plane and the side wall flange, and the sealing component is arranged between the first connecting component and the second connecting component and outside the second connecting component. The connecting side wall, the connecting inclined plane, the side wall flange and the second connecting assembly form multi-surface and multi-layer lap joint, and the effective lap joint area between sheet metal parts is greatly improved.

Inventors

YUAN HAO
XU XIAO
GAO SHUANGMING
XIE XUEYUN
GAO YILONG

Assignees

安徽江淮汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260327

Claims (9)

1. The vehicle body corner sealing structure is characterized by comprising a side wall outer plate, a running water trough plate, a first connecting assembly, a second connecting assembly and a sealing assembly, wherein one end of the side wall outer plate is provided with an arc-shaped opening; The first connecting assembly comprises a connecting side wall, a connecting inclined plane and a side wall flange, wherein a first side of the connecting side wall is vertically connected with the side edge of the side wall outer plate, a second side of the connecting side wall is connected with the first side of the connecting inclined plane, and the second side of the connecting inclined plane is connected with the side wall flange; the second connecting component is arranged at the end part of the running water tank plate, the side edge of the running water tank plate is connected with the arc-shaped opening of the side wall outer plate, and the second connecting component is respectively connected with the connecting side wall, the connecting inclined plane and the side wall flange; The seal assembly is disposed between the first connection assembly, the second connection assembly, and outside the second connection assembly.
2. The vehicle body corner sealing structure according to claim 1, wherein the second connecting assembly includes a first flange, a second flange, and a transition plate, the first flange and the second flange are respectively disposed at both sides of an end portion of the running water trough plate, the transition plate is respectively connected with the first flange and the second flange, and an included angle between the transition plate and the second flange is larger than an included angle between the transition plate and the first flange; the inner side wall of the first flanging is connected with the outer side wall of the connecting side wall, the inner side wall of the second flanging is connected with the outer side wall of the side wall flange, and the inner side wall of the transition plate is connected with the outer side wall of the connecting inclined plane.
3. The vehicle body corner seal structure according to claim 2, wherein the first bead is vertically connected to the transition plate.
4. The vehicle body corner seal structure according to claim 2, wherein the width of the first bead, the width of the second bead, and the width of the transition plate are each at least 15mm.
5. The vehicle body corner seal structure according to claim 2, wherein the overlap length of the first bead and the connecting sidewall, the overlap length of the second bead and the side wall flange, and the overlap length of the transition plate and the connecting slope are each at least 12mm.
6. The body corner seal structure of claim 1, wherein the running water channel plate is provided with an arc edge, the arc edge is provided with a laplace welding point, the running water channel plate and the side wall outer plate are welded through the laplace welding point, and a distance between two adjacent laplace welding points close to the first connecting assembly is smaller than 60mm.
7. The vehicle body corner seal structure of claim 6, wherein the seal assembly includes an inner sealant disposed between the first and second connection assemblies and an outer sealant coated on an exterior of the second connection assembly.
8. A press forming process for a corner seal structure of a vehicle body, employing the corner seal structure of any one of claims 1 to 7, characterized by comprising the steps of: stamping, namely stamping and forming the convection groove workpiece to obtain a stamping part; Drawing, namely drawing the first flanging, the second flanging and the transition plate of the stamping part to obtain a drawn part, wherein the edge is contracted by 5mm, a process supplementing surface is designed, and a parting line turns along a product structure; A positive trimming procedure, namely carrying out positive trimming treatment on the drawing piece along a positive trimming line to obtain a positive trimming piece, wherein the distance between the positive trimming line and a process supplementing surface is 10mm; A side trimming procedure, namely performing side trimming treatment on the trimming part along a trimming line to obtain a preformed part, wherein the included angle between the direction of the trimming line and the process supplementing surface is 75-105 degrees; And (3) shaping, namely shaping the preformed piece along the side trimming line to obtain the water flowing groove.
9. The press forming process of a corner seal structure for a vehicle body according to claim 8, wherein in the drawing process, the draft angle is enlarged by 3 ° to 5 °.

Description

Car body corner sealing structure and stamping forming process method thereof Technical Field The invention relates to the technical field of automobile machining, in particular to a car body corner sealing structure and a stamping forming process method thereof. Background In the traditional vehicle body design, the corner area above the water flow channel is limited in space and complex in geometric shape, and the sheet metal part at the corner area faces the technical challenges of difficult material flow, easy wrinkling, cracking and the like during stamping and forming. Due to the limitation, the flanging height of the part is often designed to be short, so that the effective lap joint area between the sheet metal parts is insufficient, and the connection rigidity is weak. In the use process of the vehicle, the vehicle body structure bears various loads and vibration, and the part is easy to generate microscopic deformation due to insufficient local strength, so that the sealing and gluing layer bears excessive shearing stress, and the problems of glue layer cracking, sealing failure and the like can occur under the long-term action, thereby causing hidden danger of water leakage and affecting the quality and service life of the vehicle. At present, a reinforcing plate is added in the industry aiming at the problems, and the problems of increased weight of the whole automobile, high manufacturing cost, difficult manual welding of an outer plate stamping part sheet and difficult quality control caused by the subsequent or additional measures such as manual brazing reinforcement and optimized gluing process are solved, so that the problems of strength and sealing caused by too short flanging of the stamping part, insufficient number of welding spots and weak structural strength can not be fundamentally solved. Therefore, how to provide a vehicle body corner sealing structure and a press forming process method thereof are technical problems to be solved in the art. Disclosure of Invention The invention aims to provide a novel technical scheme of a car body corner sealing structure and a stamping forming process method thereof. According to a first aspect of the invention, there is provided a vehicle body corner seal structure comprising a side body outer panel, a running water trough panel, a first connection assembly, a second connection assembly and a seal assembly, wherein one end of the side body outer panel is provided with an arc-shaped opening; The first connecting assembly comprises a connecting side wall, a connecting inclined plane and a side wall flange, wherein a first side of the connecting side wall is vertically connected with the side edge of the side wall outer plate, a second side of the connecting side wall is connected with the first side of the connecting inclined plane, and the second side of the connecting inclined plane is connected with the side wall flange; the second connecting component is arranged at the end part of the running water tank plate, the side edge of the running water tank plate is connected with the arc-shaped opening of the side wall outer plate, and the second connecting component is respectively connected with the connecting side wall, the connecting inclined plane and the side wall flange; The seal assembly is disposed between the first connection assembly, the second connection assembly, and outside the second connection assembly. Optionally, the second connecting component comprises a first flange, a second flange and a transition plate, the first flange and the second flange are respectively arranged at two sides of the end part of the running water trough plate, the transition plate is respectively connected with the first flange and the second flange, and an included angle between the transition plate and the second flange is larger than an included angle between the transition plate and the first flange; the inner side wall of the first flanging is connected with the outer side wall of the connecting side wall, the inner side wall of the second flanging is connected with the outer side wall of the side wall flange, and the inner side wall of the transition plate is connected with the outer side wall of the connecting inclined plane. Optionally, the first flange is vertically connected with the transition plate. Optionally, the width of the first flange, the width of the second flange and the width of the transition plate are all at least 15mm. Optionally, the overlap length of the first flange and the connecting side wall, the overlap length of the second flange and the side wall flange, and the overlap length of the transition plate and the connecting inclined plane are all at least 12mm. Optionally, the running water frid is last to have the arc limit, the arc limit is provided with the laplace welding point, the running water frid with the side wall planking welds through the laplace welding point, is close to two adjacent of first coupling assembling