Stretching Technology of Arc Corner Jointed Rib of Metal Box Shell

Abstract

The invention discloses a stretching process for connecting ribs at arc corners of a metal box shell, which comprises the following steps: preparing a metal rectangular shell, and the corner part of the metal rectangular shell is an arc corner transition part. The first metal drawing die is used to stretch the top panel of the metal rectangular shell for the first time, so that the first area between the two arc corner transition parts of the top panel forms a plurality of first convex lines. Use the second metal drawing die to stretch the side panel and the arc corner transition part of the metal rectangular shell after the first stretch forming for the second time, so that the gap between the two arc corner transition parts of the side panel The second region forms a plurality of second convex lines. Its beneficial effects are: after two stretches, the arc corners can also be made neat and the stress capacity here can be improved, and at the same time, protrusions can be formed on the shell, especially at the arc corners, which is beautiful and durable, especially in the whole In the manufacturing process, it is more convenient to demould, simplify the production process, and reduce the incidence of defective products.

Description

technical field [0001] The invention belongs to the field of manufacturing metal boxes, and in particular relates to a stretching process for connecting ribs at arc corners of metal box shells. Background technique [0002] Rigid shaped luggage is widely used by people because it can maintain the shape of the appearance and protect the contents of the box to a certain extent, especially the aluminum alloy luggage, which can protect the internal components, with reasonable design and strong structure. Beautiful, easy to use and other characteristics, widely used in instruments, meters, electronics, communications, automation, sensors, precision machinery and other industries, is an ideal box for high-end instruments. Most of the existing boxes and covers are integrally drawn structures, with corrugated grooves or convex lines on the upper and lower surfaces, but there are no boxes with corrugated grooves or convex lines on the sides at the same time. If such a box is stretche...

AI Technical Summary

Problems solved by technology

Most of the existing boxes and covers are integrally drawn structures, with corrugated grooves or convex lines on the upper and lower surfaces, but there are no boxes with corrugated grooves or convex lines on the sides at the same time. If such a box is stretched at one time, the mold will be relatively difficult Complicated, it is very difficult to remove the mold during the molding process, especially it is not easy to stretch out the convex line between the arc corner transition parts, and it is easy to jam the mold during the stretching process, resulting in defective products

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