Tank-shaped metal shell and manufacturing method thereof

Abstract

The invention discloses a tank-shaped metal shell and a manufacturing method thereof. The method comprises the following steps: a, providing a steel plate, adhering an ornamental plastic film on the surface of one side of the steel plate, wherein the ornamental plastic film and the steel plate are identical or similar in elasticity modulus; b, bending the steel plate to form a cylindrical barrel body, wherein one side of the steel plate with the ornamental plastic film faces outwards, and welding joints at two sides of the steel plate; and c, outwardsexpanding a tank-shaped mold with a closed-up opening inside the barrel body, so that a diameter of the barrel bodyis increased by 1 to 10 percent, and the outer diameter of the top end of the tank-shaped mold is smaller than the outer diameter of the main body of the tank-shaped mold. By adopting the manufacturing method, the tank-shaped metal shell can be processed, and the product appearance requirement can be met; and moreover, the ornamental plastic film adhered onto the surface of the steel plate and the steel plate are synchronously deformed, compressed patterns or characters, advertisements and the like can be pre-printed on the ornamental plastic film, after the ornamental plastic film is stretched, the ratio of the patterns is normal, the surface of a finished product is smooth and fit, and defects such as film layer separation or wrinkles, bubbling and the like are avoided.

Description

technical field [0001] The invention relates to a special-shaped metal shell of an electrical appliance and a manufacturing method thereof. Background technique [0002] With the development of the economy and the improvement of people's living standards, the sales of low-temperature beverages have increased year by year. Among them, canned beverages occupy a large share and are usually sold in low-temperature display cabinets. However, the low-temperature display cabinets on the market have a single shape, and most of them have a traditional square appearance. In order to seek a breakthrough, the market hopes to develop a display cabinet with the appearance of a can. However, due to the limitation of the current processing level, the shell of the circular display cabinet can only pass The steel plates are welded and processed into a straight up and down drum shape, and then the mouth of the tank is formed on the upper end of the drum by plastic splicing. In addition, in th...

AI Technical Summary

Problems solved by technology

However, the low-temperature display cabinets on the market have a single shape, and most of them have a traditional square appearance. In order to seek a breakthrough, the market hopes to develop a display cabinet with the appearance of a can. However, due to the limitation of the current processing level, the shell of the circular display cabinet can only pass The steel plate is welded into a straight up and down drum shape, and then the mouth of the tank is formed on the upper end of the drum by plastic splicing.

In addition, in the traditional technology, the pattern on the surface of the steel plate is formed on the shell through silk screen printing. If the steel plate is directly expanded or shrunk, it is easy to deform the pattern or change the horizontal and vertical ratio of the screen, making the pattern look abnormal

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