A brief introduction to the compound mold in the metal stamping mold

Metal stamping parts are processed by stamping dies. There are many kinds of stamping dies, among them are 'composite moldsIt is a multi-process stamping die. The design difficulty of the mold and composite film that completes several separation processes at the same part of the mold at the same time in one working stroke of the press is how to arrange several pairs of convexities in the same working position. , Concave mold. The main feature of its structure is that it has a convex and concave die that is both a blanking punch and a punching die. According to the different installation positions of the working parts of the composite mold, it can be divided into two types:'Formal mounting type conforming mold' and'Inverted mounting type compound mold.' The sheet material is separated in a compressed state, and the punched out metal stamping parts have a higher flatness. However, due to the effect of the ejector and the elastic discharge device, the separated metal stamping parts are easily embedded in the edge material to affect the operation, which affects the productivity; the flip-chip composite mold usually uses a rigid pusher device to get stuck in the concave mold The metal stamping parts in the middle are pushed down, using the flip-chip composite die of rigid push parts. The sheet metal is not punched in a compressed state, so the flatness is not high. This structure is suitable for punching harder or thicker than 0.3mm sheets. If an elastic element is provided in the upper mold, that is, an elastic pushing device is used, which can be used to punch metal stamping parts with soft material or sheet thickness less than 0.3mm, and high flatness requirements. It can be seen from the analysis of the front-mounted and flip-mounted composite membrane mechanisms that both have their advantages and disadvantages. The front-mounted type is more suitable for punching parts with softer materials or thinner sheets with higher flatness requirements. It is also possible to punch punched parts with a small hole edge distance. The flip-chip type is not suitable for punching parts with a small hole edge distance, but the flip-chip composite mold has a simple structure and can directly use the rod device of the press to push the parts. The unloading is reliable, easy to operate, and mechanized. Metal stamping parts provide favorable conditions, so they are widely used; article recommendation: a brief introduction to the intermediate progressive die of stamping parts Previous post: Process characteristics of precision machining and ultra-precision machining of metal stamping parts