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The WELLE is basically a four roll double pinch machine. It was specifically designed for bending corrugated materials in steel and aluminum. Riveted corrugated steel tanks and agricultural silos are typical applications of formed sheet passing through the machine. The design is specific because the requirement was for the machine to bend a corrugated sheet, which has a much larger section modulus (measure of stiffness) than the plane flat sheet. Thus, all the bending rolls have slide blocks at their ends, sliding in guide-ways and are driven in translation via worm and pinion gear boxes. The rotation to the synchronized gear boxes is provided by hydraulic motors. |
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WELLE comes with all hydraulic power. A Separate Standing Controls Console on rollers with all solenoid valves. The
rolls are shaped to match the wave of the corrugated sheet being bent and they are hardened to HRC 54-56. |
The frames are from high strength steel, laser cut, welded, stress-relieved, sand blasted and then precision machined. Top and pinching rolls are driven by independent hydraulic motors. Raising and lowering of the pinching roll is also accomplished by hydraulic motor/ worm and pinion gearboxes. The drop-end is manual, the hydraulic version is optional. Hydraulic units are by Roxroth and the valves by Aron. All electrical components are GE or equivalent mounted in a NEMA 12 equivalent box with master breaker and line fuses.
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| All movements are by individual hydraulic motors with their appropriate reduction gear boxes |
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Roll sets with American and European corrugated steel sheet wave forms have been used on the Welle. The most popular European wave is the 76mmX18mm with thickness ranging from 0,5mm to 2,0mm and the American wave forms of 2.667" x 1/2" and 3" x 1", 0.034"- 0.168" thick. Comal Italia will design a Welle to roll any European or American corrugated steel waveform per customer request.
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The WELLE performing |
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| Riveted corrugated tank |
