There are many types of blanking dies. Punching and dies are one of the most basic process methods of stamping. For the convenience of research, punching dies can be classified according to different characteristics:
According to the combination of processes, it can be divided into single-process simple molds and multi-process continuous molds, composite molds and continuous composite molds. According to the guide mode of the upper and lower molds, it can be an open mold without guide and a guide plate mold with a guide, a guide pillar mold, a ball guide pillar mold, a guide simple mold, etc.
According to the method of controlling the feeding step, it can be divided into fixed stop pin type, movable stop pin type, automatic stop pin type, guide pin type, side edge type and so on.
According to the material of the convex and concave dies, it can be divided into steel die, cemented carbide die, zinc-based alloy die, rubber die, polyurethane rubber die and so on.
According to the structure of convex and concave molds, it can be divided into integral mold and block mold.
According to the arrangement method of convex and concave molds, it can be divided into positive mold and flip mold.
According to the mold discharge method, it can be divided into rigid discharge mold and elastic discharge mold.
In addition, there are manual molds, semi-automatic molds, and automatic molds according to the methods of feeding, discharging and rejecting waste. According to the size of the die, it can be divided into small die, medium die and large die, and can be divided according to the degree of specialization of the mold. It is special die, general die, combined die, simple die and so on.
According to different process combinations, blanking dies can be divided into single-process blanking dies, progressive blanking dies and compound blanking dies. The above-mentioned different classification methods reflect the different characteristics of the mold structure from different angles.
Figure 1-1 (b) shows a three-dimensional view of the mold. With the help of this figure, the structure and composition of the mold can be better understood. When the mold starts to work, the strip is placed on the concave mold 12 and positioned by the stop pin 21. At the beginning of blanking, the punch 10 and the top piece 13 first contact the strip. When the slide of the press moves downwards, the male mold 10 and the female mold 12 work together to punch out the workpiece. After the blanking deformation is completed, when the slider rises, the unloading plate 11 scrapes the strip from the punch 10 under the rebound force of the spring. At the same time, under the rebound force of the rubber 19, the ejector rod 15 pushes the top The piece 13 pushes the piece out of the concave mold 12 to complete the entire blanking process. Then, the strip is lifted and fed forward, and positioned by the stop pin 21 for the next punching.
Read more: Simple Guidance for You in Blanking Dies
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