Damage-free material returning stamping die

Abstract

A damage-free material returning stamping die comprises a female die, two air cylinders and two material returning rods. The inner top face of the female die at least comprises a forming plane and a forming arc face surrounding the forming plane; two through holes penetrating through the female die are formed in the forming plane; the two air cylinders are both located above the outer portion of the female die; and one end of each material returning rod is connected with a telescopic rod of one air cylinder, and the other end of each material returning rod penetrates through one through hole to be located in the female die. According to the damage-free material returning stamping die, the two symmetrical material returning rods are arranged on a forming plane of the top of the female die and only make contact with the top plane of a formed part, so that the problems that in the prior art, the inner side faces of most female dies are provided with arc faces, therefore, a formed part is also provided with the arc face, a material ramming face of a material ramming block is generally a plane, the area is large, the material ramming face is difficult to be attached and matched with the arc face of the formed part, indentation is easily caused on the arc surface of the formed part, and additional polishing is needed are solved.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a stamping mold for returning materials without damage. Background technique [0002] Mold is a tool used in industrial production to make shaped objects. It mainly realizes the processing of the shape of objects through the change of the physical state of the formed materials. It is known as the "mother of industry". In practice, the stamping die is a kind of mold, which requires the cooperation of the die and the punch. After the stamping is completed, the formed parts are easily embedded in the die and difficult to fall off. Therefore, there is usually a retractable die on the top of the die. The knockout block is used to punch out the embedded molded parts from the die. [0003] However, in the prior art, most of the inner surfaces of the dies have arc surfaces, therefore, the molded parts also have arc surfaces, and the knockout surface of the knockout block is usually flat a...

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art, most of the inner surfaces of the dies have arc surfaces, therefore, the molded parts also have arc surfaces, and the knockout surface of the knockout block is usually flat and has a large area, which is difficult to match with the molded pieces. The curved surface of the molded part fits and matches, and it is easy to cause indentation on the curved surface of the molded part, which requires additional grinding

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