Manufacture method for bending crooked pipe
A manufacturing method and bending technology, which is applied in the manufacturing field of common fittings for pipeline connections, can solve the problems of residual filler, high manufacturing cost, and large power required, and achieve the effects of reducing difficulty, long service life, and convenient operation
Inactive Publication Date: 2012-07-04
ZHEJIANG TIANQING PIPE MFR
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Problems solved by technology
[0003] The invention provides a manufacturing method of bent and coiled pipes with simple process, convenient removal of fillers and no residue, plump product surface after processing, and high product qualification rate; it solves the complicated process and required power Large, the filling of the product remains, and the technical problems of high manufacturing cost
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Embodiment 2
[0023] The difference from Example 1 is that the first step in this example is blanking, and the soft copper tube is cut with a cutting machine to the theoretical development length of the product plus a margin of 3%, and the second step uses Partial flattening, that is, using a flattening die to press the part of the round tube cut in the first step that needs to be bent into an elliptical shape on a hydraulic press. All the other parts are identical with embodiment 1.
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Abstract
The invention relates to the technical field of the manufacture of common accessories for pipeline connection, in particular to a manufacture method for bending a crooked pipe by utilizing a reverse deformation process. The invention adopts a reverse deformation principle and pre-deforms the bending part by a flattening process so that pre-deformed shape of a product is basically trimmed after a forming process. The manufacture method for bending the crooked pipe, which is provided by the invention, has simple process and high product percent of pass, fillings are convenient to take out without residue, and a processed product has a replete surface. The invention solves the technical problems of complicated process, great power need, product filling residue and high manufacture cost in the prior art.
Description
technical field [0001] The invention relates to the technical field of manufacturing commonly used fittings for pipe connections, in particular to a manufacturing method for bending a curved pipe by using a reverse deformation process. Background technique [0002] Nowadays, many pipe fittings in the pipeline connection have to rely on the overlapping of horizontal and vertical straight pipes to complete the crossing pipeline, which brings a lot of inconvenience to the cross distribution of pipelines. In order to save the pipeline installation space, the above-mentioned problems are solved by winding the pipeline. The traditional processing method of the curved pipe is to fill it with lead, and then shape it by pushing the mold. It needs to go through 7 processes of blanking, lead melting, lead filling, forming, lead removal, flaring, and cutting. The product surface also needs to be pickled to remove the residual lead in the tube, and the product surface has a certain degr...
Claims
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IPC IPC(8): B23P15/00
Inventor 黄明辉胡萍辉阮成福孙杰郑温宇
Owner ZHEJIANG TIANQING PIPE MFR
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