A pusher structure for sealing multi-layer pipes
A multi-layer pipe and pusher technology, which is applied in the field of pipeline processing, can solve the problems of reducing product quality, taking a long time, and prone to deviation, and achieving the effect of improving processing efficiency and simplifying the processing process.
Active Publication Date: 2018-10-19
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology
This processing method takes a long time and is prone to deviations that reduce the quality of the product
Method used
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Embodiment 1
[0036]In this embodiment, the multilayer pipe is a double-layer pipe 10 structure, and the first layer pipe 101 is shorter than the second layer pipe 102 sleeved outside it. After the double-layer pipe 10 undergoes expansion and deformation, each part of the multilayer pipe The pipe walls of the layered pipes will be bonded together, and the next processing steps need to use the push head structure 320 disclosed in the present invention. In order to correspond to the double-layer pipe 10, the push head structure 320 of this embodiment includes the first A guiding section 326 , a second guiding section 329 , and a thrust platform 328 . The process is: put the double-layer pipe 10 into the mold 220, push the push head structure 320 into the end of the double-layer pipe 10, before the push head structure 320 enters the double-layer pipe 10 and has not been further advanced, as figure 2 , image 3 As shown, the first layer of pipe 101 is at the position of the first guiding sect...
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The invention relates to the field of pipe processing, in particular to a push head structure for sealing multi-layer pipes, which at least includes a first guiding section, a second guiding section, and a thrust table, and the second guiding section is arranged on the first At one end of the first guiding section, the thrust platform is set at the end of the second guiding section away from the first guiding section; the cross-sectional areas of the first guiding section, the second guiding section, and the thrust platform are successively larger; the thrust head Along its axial direction, the structure is provided with a first conveying pipe that runs through the first guiding section, the second guiding section, and the thrust table, and the second guiding section is provided with a second conveying pipe that is vertical and connected to the first conveying pipe , the second conveying pipe runs through the second guide section; the second guide section includes a first stay part, a guide part and a second stay part connected in sequence, the second stay part is closer to the thrust platform than the first stay part, and the second stay part is closer to the thrust platform than the first stay part. The size of the stay part is larger than that of the first stay part, and the guide part is a frustum of cone. The invention has the advantages of simple structure, convenient processing and simplified processing.
Description
technical field [0001] The invention relates to the field of pipe processing, in particular to a push head structure for sealing multilayer pipes. Background technique [0002] Internal high-pressure forming of pipes is a process in which pipe blanks are forced to fit into the cavity of the mold under the pressure of the pressurized medium by filling liquid and pressurizing the inside of the pipe and simultaneously adding axial thrust to realize the forming of the pipe blank. . The pressure of liquid filling and pressurization inside the pipe is generally as high as 100MPa-400MPa, and most of the formed parts need to be kept under high pressure for a period of time to achieve a good forming effect, so the sealing structure of the pipe end is good or bad. , directly affects whether the ultra-high pressure state can be realized, and thus affects whether the forming of pipe parts can achieve the expected effect. Therefore, the quality of the pipe end sealing structure is very ...
Claims
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IPC IPC(8): B21D26/045B21D26/049B21D26/051
CPCB21D26/045B21D26/049B21D26/051
Inventor 徐雪峰华如雨付春林孙前江
Owner NANCHANG HANGKONG UNIVERSITY