Gas transfer type stamping lower die easy to demold

Abstract

The invention discloses a gas transfer type stamping lower die easy to demold, and belongs to the field of stamping dies. According to the gas transfer type stamping lower die easy to demold, throughthe arrangement of a gas passing balloon, in the stamping process, a bearing plate moves downwards to generate the extrusion effect on the gas passing balloon under the extrusion effect of a punch, sothat gas in the gas passing balloon is quickly transferred into a gas transfer cavity to be stored; after stamping is finished and the extrusion effect of the punch is lost, the gas passing balloon is rapidly filled with the gas transferred into the gas transfer cavity, and in cooperation with the effect of an inwards-pushing elastic piece, transferring of inert gas into the gas passing balloon is accelerated, so that the speed of jacking the bearing plate and upwards pushing a stamping part is higher; and compared with the prior art, not only is the demolding difficulty reduced, but also theoverall stamping efficiency is improved, meanwhile, under the action of an oil guide trailing ball, the bottom surface of the stamped part can be lubricated, the directly stressed bottom of the stamping part is effectively protected against abrasion with the bearing plate due to large stress, and then the quality of the stamping part is improved.

Description

technical field [0001] The invention relates to the field of stamping dies, in particular to an air-transfer type easy-release stamping lower die. Background technique [0002] Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die (commonly known as cold stamping die). Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation to obtain the required parts. [0003] a. Blanking die A die that separates material along a closed or open contour. Such as blanking die, punching die, cutting die, notch die, trimming die, cutting die, etc. [0004] b. The bending die makes the sheet blank or other blanks bend and deform along a straight line (bending line), so as to obtain a die with a certain angle and shape of the workpiece. [0005] c....

AI Technical Summary

Problems solved by technology

[0008] During the stamping process, due to the rapid deformation of the stamping parts in a very short period of time, and due to the matching of the punch and the mold, the formed stamping parts are attached to the inner wall of the mold after stamping, although the inner wall of the mold cavity Generally, mold release oil is applied, but when demolding, due to the small distance between the stamping part and the inner wall of the cavity, it is still difficult to demould, which affects the overall efficiency of stamping

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