Composite mold refers to the completion of several stamping processes at the same position of a set of molds in one stroke of the press. The main structural feature is that there is a convex and concave mold that is both a blanking punch and a punching die. Let's take a look at the structure of the composite model. 1. Composite mold structure plan (1)
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2. Assembly drawing of composite mold structure (1)
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This structure is a common composite mold structure. When T is greater than or equal to 0.5, the upper die is ejected by 1.0, and the stripper plate is ejected by 1.0. When T is less than 0.5, the upper die is ejected by 2T, and the stripper is ejected by the lower die by 2T. (Remarks T is material thickness) 3. Plane view of composite mold structure (2)
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4. Structural Assembly Diagram of Composite Die (2)
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This structure is a common compound mold general stripping plus double-layer stripping structure. This structure is suitable for the part where the spring cannot be directly pushed against the inner stripping plate due to too many punches or narrow parts of the product, and a double-layer stripping structure is used locally. When a set of mold adopts double-layer stripping with more than three places, this structure is not applicable, and five-layer stripping is required. When double-layer stripping is used, the front of the upper mold base needs to be tapped to stop the holes for easy mold folding. 5. Composite mold structure plan (3)
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6. Assembly drawing of composite mold structure (3)
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This structure is a five-layer plate stripping structure of the composite mold. This structure is suitable for the springs that cannot be directly pushed against the inner stripping plate due to too many product punches or narrow products. The upper plate is generally made of CR12 material, heat treated to HRC: 50-53. When the mold is small, the upper pad can be hollowed out in the form of a template instead.
