DE384575C - Bending beam on folding devices for sheet metal - Google Patents

Description

The subject of the invention is the special design of the bending beam of a folding device, which make it possible to continuously create acute-angled bends in zigzag or to create a wave shape without unclamping the material to be bent, turning it over and clamp it again. Folding machines and similar bending devices are known, in which ίο can only be bent in one direction. It has to be with these known devices in all cases removed the material to be bent from the device, rotated and used again, which is omitted in the bending beam forming the subject of the invention. In the drawing shows the invention in its design and mode of operation.

Fig. Ι shows a folding device with the new bending beam in a front view,
Fig. 2 in side view,
Fig. 3 in plan;

Fig. 3a shows a detail (lever c);
Fig. 4 shows a section along line AB of Fig. 1 with clamped sheet metal, lever c ready for the first movement;

Fig. 5 shows the first bend with lever c in position II, bending beam α before the changeover, from position 1 to position 2;

Fig. 6 shows the advanced sheet and the converted bending beam, lever c ready to move back to position I;

Fig. 7 shows lever c in position I, bending beam α before switching from position 2 to i.

Between the two levers c pivotably arranged on the side frame parts b of a folding device, the bending beam α is mounted rotatably about the bolts e. Through the connecting rod (/ the levers c are rigidly connected to each other. The bending beam α consists of the two face shields with the bores / 'and f ¹ and of the two Z-shaped legs o ¹ and σ ² , which are opposite each other with the face shields are firmly connected, in such a way that the already bent material can pass through the space between the legs. This arrangement ensures that unlimited lengths can be continuously bent. The bores / and are used to adjust the bending beam α on the levers c f ¹ , the bolts h and the holes g. The movement of the levers c can be effected by machine or by hand.

The device is set on the drawing (Fig. 4) for bending corrugated sheets. By lifting the lever c from position I to position II, the sheet metal is placed around the upper clamping cheek I. The levers c now assume position II, as shown in Fig. 5. The bolts h are released from the bores f ¹ and g , the sheet is pushed forward and the bores / are connected to the bores g , as can be seen from FIG. 6. By moving the lever c back from position II to I, the same effect is achieved as first. These alternating movements are continued until the desired number of waves have been bent or until another bend is to be made in the material. The already bent material passes between the legs a ¹ and a ^{2 of} the bending beam, which is particularly important when designing them.

Claims (1)

Patent claim: Bending beam on folding devices for sheet metal, characterized in that it is arranged to swing by itself and has two opposing legs (α ¹ , α-) which alternately bend the advanced sheet up and down and the processed material through the space between them ⁸ S allow passage. For this purpose ι Hkitt drawings.