Simple precision die

Abstract

A simple precision die relates to the field of punching equipment. A die handle is arranged on an upper die holder, guide sleeves and guide posts are arranged between the upper die holder and a lower die holder, the guide posts are movably connected with the guide sleeves, a male die is arranged on the bottom of the lower die holder, a bolster is arranged between the male die and the upper die holder, a stripper plate is arranged on the lower part of the male die, the bottom of the stripper plate is provided with an annular opening, a toothed ring pressing plate is arranged in the annular opening, an ejector plate is arranged at the middle of a female die, three ejector rods are arranged on the bottom of the ejector plate, and the female die is fixed on the top of a lower die holder by a left screw and a right screw. Two stripper screws are arranged between the upper die holder, the bolster and the stripper plate, and disc springs are arranged on the stripper screws. The simple precision die can overcome the defects of the prior art, the pressure resistance of the simple precision die is enhanced, the deviation of the die is prevented, and thereby the punching precision of the die is ensured.

Description

Technical field: [0001] The invention relates to a stamping die, in particular to a simple fine punching die. Background technique: [0002] Stamping die is a kind of equipment commonly used in industrial production. It can perform forming processes such as punching and blanking. When the existing stamping die punches thin materials, the material belt is in a free state. When punching or blanking, the material belt is very fast. It is easy to wrinkle, which affects the accuracy of the product and increases the reject rate of the product. Even if the unloading plate is used to press the unloading and pushing parts, it cannot prevent the material belt from bending because of insufficient pressure on the material belt. In addition, when the existing stamping die is used for stamping, the material strip is only subjected to the pressure of the punch, and the material strip at the cutting edge will be sheared and torn. The product section has only about 1 / 3 of the bright band, an...

AI Technical Summary

Problems solved by technology

[0002] Stamping die is a kind of equipment commonly used in industrial production. It can perform forming processes such as punching and blanking. When the existing stamping die punches thin materials, the material belt is in a free state. When punching or blanking, the material belt is very fast. It is easy to wrinkle, which affects the accuracy of the product and increases the reject rate of the product. Even if the unloading plate is used to press the unloading and pushing parts, the pressure on the material belt is not enough to prevent the material belt from bending

In addition, when the existing stamping die is used for stamping, the material strip is only subjected to the pressure of the punch, and the material strip at the edge will be sheared and torn. The product section is only about 1 / 3 of the bright band, and the rest is rough fracture. Belt, poor section quality

[0003] Patent No. 201120025855.1 discloses a simple fine punching die, which can increase the pressure on the material strip during stamping, make the material strip in a state of three-dimensional compressive stress, prevent the material strip from bending, and improve the precision and section quality of the product, but The lower end of the top plate set in the die is only provided with two ejector pins, the bearing pressure is not enough, it can only withstand the pressure on thin materials, and it is easy to cause the ejector pins to break for thick materials; in addition, the punch and the upper die, There is only one screw at the connection between the die and the bottom die, which affects its stability. The die is prone to deviation during the stamping process, which affects its stamping accuracy

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