Method For Producing A Container Body

Abstract

The method forms a blank into the container body. A disc-shaped blank is punched out of a metal sheet. Following the punching process, the two edges of the blank are compressed. The disc-shaped blank thus obtains a symmetrical shape. With any of its two flat sides, the blank can be transported into a forming position, from which it is then formed into the container body. The edges obtain an accurately predetermined shape and can thus be arranged more easily in the desired forming position. Preferably, both edges are machines simultaneously in response to compressing the two edges of the blank.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a method for producing a container body, which is produced from a blank, which is identified as round blank, in a seam and joint-free manner. For example, the container body encompasses a cylindrical container wall, which, at one end, merges axially into a container part, which closes the container body, such as a container bottom. The container body, which is to be produced, can thus be closed axially at one end by means of the container part, or can also encompass an opening at both ends. The container body is open at at least one axial end. Such container bodies can be produced by means of impact extrusion, for example, so as to produce tubes, cans or the like of metal, for example aluminum, or of a metal alloy. The shape of the container body can vary as a function of the design of the die and of the stamp.[0002]An extrusion press for producing such container bodies is known from DE 1 402 784 A, e.g.. Round blanks or plat...

AI Technical Summary

Benefits of technology

The invention provides a method for making containers by punching out blanks from metal sheets and compressing their edges. This process removes any irregularities from the punching process and makes the blanks symmetrical, which simplifies their positioning in the forming position. The compression also calibrates the blank and removes any irregularities, preventing errors in the forming process. The method is efficient and can be used with existing equipment, such as machines used for rimming coins. The compressed blanks have a symmetrical shape and can be easily positioned, which reduces errors in the forming process. The method also allows for the formation of borders or radii on the edges of the blanks, which further simplifies their positioning.

Problems solved by technology

Unevenness at this edge, which is formed by the punching burr, is thus unproblematic.

This problem has been known for a long time.

Errors, which in turn entail errors in response to the forming of the blank into the container body, can also occur in response to the sorting.

This leads to errors.

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