Forming die of porous flanging stamping procedure and forming method thereof

Abstract

The invention relates to a forming die of a multi-hole flanging punching process and the forming method thereof. The forming die comprises an upper die holder and a lower die holder which are assembled together via a guide component; an upper padding plate, an upper fixing plate, an upper pressing plate and a forming male die are arranged on the bottom surface of the upper die holder, a forming female die corresponding to the forming male die is arranged on the upper surface of the lower die holder, and a padding iron is arranged on the bottom surface of the lower die holder. The invention changes the conventional punching method that requires two processes and two sets of dies to punch the bottom holes and flange the holes, and designs a punching method which comprises the steps of firstly deep drawing forming and then extrusion-shearing forming in one working position and requires only one process and one set of dies. The forming die of the invention realizes the one-shot punching forming of shutter holes, and the formed hole-flanging has smooth and neat edge without flash or burr; and after hole flanging, the outer surface of the whole panel is smooth without drawing deformation or corrugation, thereby conforming to the product technical requirements.

Description

technical field [0001] The invention relates to a molding die for the punching process of porous flanging of a louver hole of a freezer panel, and also relates to a forming method of the porous flanging using the molding die, which belongs to the field of cold stamping manufacturing. technical background [0002] Usually, a panel with louver holes is designed on the freezer, and multiple stamping processes are arranged on it, among which forming the louver holes is the last process, and the louver holes play the role of heat dissipation and ventilation. According to the size of the product appearance and related calculations, the louver holes can be designed in one or more groups on all series of refrigerator panels. The material used for the panel of the freezer is cold-rolled steel plate with a thickness of 0.45mm. The main technical requirements of the louver hole after forming are as follows: (1) The edge of the turned hole must be smooth and clean; there must be no flas...

AI Technical Summary

Problems solved by technology

If the production arrangement is carried out according to the production method of "multiple varieties, multiple specifications, and small batches", only the louver hole process needs to occupy a large number of production equipment and production personnel in the workshop, especially in the peak sales season. This problem is more prominent. The existing molding method And forming molds have seriously affected the production efficiency of enterprises, greatly reducing production efficiency

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