Non-uniform-thickness hydraulically-formed flexible composite pipe
A flexible composite pipe and hydroforming technology, applied in the direction of hoses, pipes, hose connection devices, etc., can solve the problems of high scrap rate, high labor intensity, inconvenience, etc., and achieve the effect of improving fatigue strength
Inactive Publication Date: 2018-06-12
WEIFANG BELEAD AUTOMOBILE PARTS
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Problems solved by technology
Traditional production methods still have problems such as complex process, high scrap rate, and high labor intensity.
[0007]
In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve
Method used
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0032] see figure 2 , the present invention provides a non-equal thickness hydroformed flexible composite pipe, comprising a main pipe 1 and auxiliary pipes 2 respectively socketed at both ends of the main pipe 1; the pipe body of the main pipe 1 is provided with a corrugated structure;
[0033] see image 3 , the sleeve part of the main pipe 1 and the auxiliary pipe 2 forms a double-layer structure; the ports of the main pipe 1 and the auxiliary pipe 2 are flush.
[0034] The present invention adopts hydroforming method to produce, and concrete process is as follows:
[0035] A material prepar...
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Abstract
The invention relates to the technical field of pipe hydraulic forming, and provides a non-uniform-thickness hydraulically-formed flexible composite pipe. The non-uniform-thickness hydraulically-formed flexible composite pipe comprises a main pipe and auxiliary pipes which are in cup joint to the two ends of the main pipe correspondingly. A corrugated structure is formed by a pipe body of the mainpipe. The cup-joint parts of the main pipe and the auxiliary pipes are closely attached to form a double-layer structure. The main pipe is flush with the port positions of the auxiliary pipes. Accordingly, the non-uniform-thickness hydraulically-formed flexible composite pipe is provided. The two ends of the main pipe are in cup joint with the auxiliary pipes, and the double-layer structure is formed through a hydraulic integrated forming method; and through a passive hydraulic structure, the corrugated structure is formed on the pipe body of the main pipe, and a boss connecting structure isformed at the port positions in the two ends. The welding procedure in the traditional technology is replaced, and the fatigue strength is obviously improved. The problems of oil seepage and leakage are solved as well. In the forming process, the wave crest area of the corrugated structure is thinned, the rigidity at the position is reduced, and the non-uniform-thickness hydraulically-formed flexible composite pipe can be applied to the work condition with the higher axial displacement requirement.
Description
technical field [0001] The invention relates to the technical field of pipe hydroforming, in particular to a non-uniform thickness hydroforming flexible composite pipe. Background technique [0002] With the development of society and the continuous progress of human civilization, people have put forward higher and higher requirements for modern manufacturing, such as in the field of automobiles. Lightweight automotive structures are becoming increasingly important. At the same time, similar problems have been encountered in other industrial fields, making lightweight structures a development trend of modern advanced manufacturing technologies. [0003] The hydroforming process of pipe fittings adapts to the development requirements of lightweight structures in the fields of automobiles and aircrafts due to the advantages of reduced material consumption, light weight of parts, high strength and flexible structural design, and has become a research hotspot in the field of me...
Claims
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IPC IPC(8): F16L11/15F16L33/02B21D15/06B21D15/10
CPCF16L11/15B21D15/06B21D15/10F16L33/02
Inventor 高林玉易斌何海林胡家磊韩双玉
Owner WEIFANG BELEAD AUTOMOBILE PARTS