In order to ensure the dimensional accuracy of the outer belt weather-strip, reduce the extrusion production defects and ensure the stability of the outer belt weather-strip installation on the door, the shape of the metal insert and the forming accuracy are particularly important. In this paper, the roll forming process of a kind of asymmetric metal insert section is studied, the cross-section structure is simulated and analyzed by CAE method, and the metal insert structure is optimized and the structure of the existing roll-forming tooling is optimized without affecting the performance, thus solving the defects of material crossing and grinding in the production of a kind of asymmetric section products. Based on this, multiple sets of roll-forming tooling are developed, which effectively improves the production quality of auto parts.

Outer belt weather-strips  /  Metal insert  /  Structure optimization  /  Roll forming