A method and device for butt jointing of plates in internal high pressure forming

Abstract

The invention provides a plate butt joint device for internal high pressure forming, comprising: a mold, a split mold is arranged above the mold; a plate layer, the plate layer is placed directly above the mold; a punch, the punch The head is located directly above the sheet material layer; the present invention also provides a sheet material docking method for internal high pressure forming, the specific steps include: starting the sheet material docking device for internal high pressure forming, injecting high-pressure liquid after the punch touches the upper auxiliary sheet material, and the sheet material The layers are extruded and cut into a circular scrap, forming a mechanical lock. The invention can realize the butt joint of the same or dissimilar boards without damaging the coating on the surface of the materials; during the process of butt jointing the boards, no smoke, sparks, and harmful gases are generated, which can improve the working environment; the formed mechanical lock has high strength and can adapt to high-intensity operations .

Description

technical field [0001] The invention relates to the field of stamping devices, in particular to a method and a device for butt joint of plates for internal high pressure forming. Background technique [0002] Lightweight is the current development trend in automobile, aviation, aerospace and other fields. Due to the high strength-to-mass ratio of lightweight materials such as aluminum alloys, the use of aluminum alloys can significantly reduce the structural weight. Among the materials used, the proportion of lightweight materials such as aluminum alloys is increasing. [0003] However, there is a natural oxide film on the surface of the aluminum alloy. When the aluminum alloy sheet is butted, the performance of the connection point obtained by the traditional welding method is poor, and the sparks, smoke, and harmful gases generated during the welding process are not only harmful to the body of the staff. Serious harm to health and pollution to the environment. In order t...

AI Technical Summary

Problems solved by technology

[0003] However, there is a natural oxide film on the surface of the aluminum alloy. When butt-joining aluminum alloy plates, the performance of the connection point obtained by using the traditional welding method is poor, and the sparks, smoke, and harmful gases generated during the welding process are harmful to the health of the staff. Serious hazards to health and pollution to the environment

In order to improve the corrosion resistance of the material, the coating is usually sprayed on the material, and the use of welding will destroy the coating on the surface of the material and reduce the corrosion resistance of the material

In addition, the fatigue strength of welded joints also limits the application of traditional welding

Images