The structural design of automotive molds is a complex and critical process, and its primary task is to accurately handle the layout of drawings. Drawings are not only the basis for mold design and manufacturing, but also a bridge for efficient communication and collaboration between designers and engineers. Therefore, a reasonable layout of drawings can clearly present the various components of the mold and ensure the accurate communication of the design intent. The drawings should include the upper mold plane, lower mold plane, section view and detailed part drawings, and clearly indicate the name and sectioning position of each view. In addition, process flow charts, roughness requirements, overview of symbols and meanings, and overview of technical requirements are required to ensure the smooth progress of various operations in the mold manufacturing process.

In the mold structure design, spring travel diagrams and working travel diagrams of side punch and side forming molds are also indispensable components. For molds involving springs, a detailed spring travel diagram must be provided, marking the preload and actual working travel of the spring, and clearly distinguishing between the upper and lower molds. The working travel diagram of the side punch and side forming mold should cover the mold guide travel, the working travel of the spring and the working travel of the wedge to ensure that the mold completes the task smoothly and orderly during the molding process.

In the design of the closed height of the mold, the maximum and minimum mold heights of the stamping machinery must be fully considered, and appropriate margins must be reserved in the design. At the same time, the design of the guide structure is an important part of the mold structure design. The upper and lower molds are usually guided by implanted guide pins and guide sleeves. For small and medium-sized molds, two sets of guide pins and guide sleeves are usually configured, while large molds need to be equipped with four sets of guide pins and guide sleeves to ensure the guiding accuracy and stability of the mold.

The material and thickness of the mold base (upper and lower templates) of the mold are also factors that must be considered in the design. The mold base material is generally made of high-quality steel such as 45# or Q235, and its thickness must meet certain standards to ensure the strength and rigidity of the mold. In terms of positioning and picking design, for blanking and punching molds, floating pins or fixed stoppers can be used for positioning; for forming molds, hole positioning is preferred, and contour positioning or profile positioning can also be used to meet specific needs.

In the waste handling design of the mold, it should be ensured that the waste can be discharged smoothly, and it is preferred to introduce it into the leakage hole in the center of the machine tool to reduce the impact of the waste on the mold and the production environment. In addition, the mold handle design must also fully consider the size of the customer's press handle hole to ensure that the outer dimensions of the handle match it to achieve precise matching.

The structural design of the automotive mold also needs to pay attention to the setting of the gap between the punching punch and the die. This gap not only directly affects the quality of the punched parts, but also affects the service life of the mold. Therefore, in the mold design, it is necessary to reasonably determine the size of the punch and die gap based on the material thickness, material and actual production needs, and ensure the accuracy and stability of the gap through a series of process measures.