发明名称 |
PERFECCIONAMIENTOS EN LAS MAQUINAS DOBLADORAS DE TUBOS. |
摘要 |
<p>The invention provides an improved method and apparatus for pipe bending. In the method a leading portion of a length of pipe is heated and bent around a mandrel into a pipe bend, whereafter it is hot calibrated or sized to finished dimensions and at the same time cut off and trimmed to size at both ends. In a machine for carrying out the method, there are a heating chamber and an interchangeable bending mandrel. At the end of the bending mandrel there is a horizontally functioning calibrating or sizing device. A severing device is both in front of and behind the calibrating device for cutting off and trimming the pipe bend, and the pipe bend is movable both longitudinally and/or transversely in the horizontal plane.</p> |
申请公布号 |
ES453849(A1) |
申请公布日期 |
1977.11.16 |
申请号 |
ES19490004538 |
申请日期 |
1976.12.01 |
申请人 |
SIDRO, G. M. B. H., U. CO., LUDWING MULLER |
发明人 |
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分类号 |
B21D7/16;B21C37/28;B21D9/12;(IPC1-7):21D/ |
主分类号 |
B21D7/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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