| 摘要 |
In a process to produce sheet-metal casings, in particular for pallet containers that have an inner container of plastic, a rectangular sheet-metal blank, whose narrow sides are folded to form a double-fold edge, is bent to form a tubular body (15) and the double-fold edges (11a, 12a) of the tubular body (15) are hooked together. A series of connector tabs (16) are formed outwards from the double-fold edges (11a, 12a) parallel to the double-fold edges (11a, 12a) that are hooked together, by cutting and stamping. The double-fold edges (11a, 12a) are locked to each other by means of a wire (17) that is drawn through the connector tabs (16), and the tubular body (15) that is produced in this way is formed into a sheet-metal casing on a stretching press. (Figure 3) |
