The important role of die in metal stamping production

Die is an essential die in stamping production. There are three kinds of stamping dies: simple die, continuous die and compound die.

 

(1) Simple die simple die is a kind of die which only completes one process in one stroke of the press. It is a simple punching die for blanking or punching. When the assembly drawing of the simple die is working, the strip is fed along the two guide plates 9 on the female die until it touches the positioning pin 10. When the punch is pressed downward, the parts (or scraps) go into the die hole, and the strip clamp the punch and move upward along with the punch. When the strip touches the discharge plate 8 (fixed on the die), it is pushed down so that the strip continues to feed between the guides. Repeat the above action and punch down the second part.

 

(2) In one stroke of continuous die press, the die which completes several stamping processes at different parts of the die at the same time is called continuous die. During operation, the Ding pin 2 is aligned with the pre punched positioning hole, the upper die moves downward, the punch 1 is blanking, and the punch 4 is punching. When the upper die returns, the discharge plate 6 pushes the scrap from the punch. At this time, the blank 7 is sent forward to perform the second blanking. In this way, the feeding distance is controlled by the stopper pin.

 

(3) Compound die in a stroke, metal stamping processing in the same part of the mold at the same time to complete several stamping processes of the mold, known as the composite die. The Zui characteristic of compound die is that there is a punch and die 1 in the die. The outer circle of the punch is the cutting edge of blanking punch, and the inner hole is the drawing die. When the slider moves downward with the punch, the strip is first blanking in the punch 1 and blanking die 4. The blanking part is held by the drawing punch 2 in the lower die. When the sliding block continues to move downward, the die moves downward to draw. The ejector 5 and the stripper 3 push the drawing piece 9 out of the die in the return stroke of the slider. The compound module is suitable for stamping parts with large output and high precision.