Automobile punching die ductile iron drawing model face cooling tool

Abstract

The invention aims at providing an automobile punching die ductile iron drawing model face cooling tool. The bottom of a profile is provided with a cooling pipeline matched with the profile in shape.In the cooling pipeline, a plurality of straight steel pipes and bent steel pipes are connected and combined through connection sleeves to form the shape matched with the profile. An inlet pipe of thecooling pipeline is fixed to a middle box through an inlet pipe connector, and an outlet pipe is fixed to the middle box through an outlet pipe connector. Then, an air inlet and an air extraction port are used for air inflow and air outflow. Air extraction cooling is conducted on the concave corner part of the profile, and accordingly, thermal joint part moulding sand cooling is effectively accelerated. Air is utilized for conducting air cooling on local moulding sand at the profile position, and accordingly the problem of shrinkage porosity and cavities of the part is solved.

Description

technical field [0001] The invention relates to the field of solid mold casting of automobile stamping dies, in particular to a cooling tool for the ductile iron drawing model surface of the automobile stamping die. Background technique [0002] Automobile stamping dies mainly produce internal and external sheet metal parts of automobiles, such as doors, side panels, top covers, rear doors, etc. Due to the needs of body design, many structures are relatively complex and the curved surfaces change greatly. Automobile stamping dies are mainly formed by solid casting resin sand. The process is to ensure the quality of the mold surface. When molding, the mold surface is facing upwards. When melting and pouring, the mold surface is at the bottom. Since the resin sand below is under the molten iron after pouring, it will be overheated for a long time. And the heat is dissipated in time, resulting in hot joints at the concave corners, which are prone to shrinkage and shrinkage prob...

AI Technical Summary

Problems solved by technology

[0002] Automobile stamping dies mainly produce internal and external sheet metal parts of automobiles, such as doors, side panels, top covers, rear doors, etc. Due to the needs of body design, many structures are relatively complex, and the curved surface changes greatly.

Automobile stamping dies are mainly formed by solid casting resin sand. The process is to ensure the quality of the mold surface. When molding, the mold surface is facing upwards. When melting and pouring, the mold surface is at the bottom. Since the resin sand below is under the molten iron after pouring, it will be overheated for a long time. And the heat is dissipated in time, resulting in heat joints at the concave corners, prone to shrinkage and shrinkage problems

The traditional casting method adopts cold iron laying at this position to enhance chilling, but due to different cooling conditions and many influencing factors in the process, it is difficult to ensure that there will be no shrinkage cavity and porosity on the mold surface

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