High-pressure-resistant tee forming machine capable of improving yield

Abstract

The invention discloses a high-pressure-resistant tee forming machine capable of improving yield, which comprises an upper die and a lower die, wherein telescopic water injection guns are arranged inthe lower die corresponding to two branched pipe die cavities of a tee, the telescopic water injection guns are arranged at the front end of a main piston rod of a main oil cylinder, and a telescopicretreating stopping device is arranged beside the main piston rod. After the technical scheme is adopted, the high-pressure-resistant tee forming machine has the advantages that 1, before water injection is carried out, the main piston rod is firmly locked to prevent the situation that in the water injection process, the main piston rod retreats due to the fact that water pressure in a U-shaped pipe is sharply increased, so that loss of water pressure in the U-shaped pipe is avoided, and a condition is created for subsequent secondary forward pushing forming; and 2, by the cooperation of a forming auxiliary rod and the water pressure, in the calendering forming process, the outer wall of the U-shaped pipe is slowly calendered instead of being instantaneously finished, and the forming auxiliary rod retreats in the forming process and abuts against the outer wall of the U-shaped pipe, so that the outer wall is prevented from being crushed by strong water pressure due to over-excitation of forming, and the yield is improved.

Description

Technical field: [0001] The invention relates to a high-pressure-resistant tee forming machine capable of improving the yield. Background technique: [0002] At present, the relatively advanced production method of the tee pipe is made by hydraulic pressure calendering. The telescopic water injection gun at the front end of the main piston rod is inserted into the two nozzles of the U-shaped pipe, and water is injected into the U-shaped pipe. Push, at this time, the water pressure in the U-shaped pipe pushes the pipe wall at the junction of the three-way main pipe cavity and the U-shaped cavity to the direction of the three-way main pipe cavity, and finally obtains the required three-way pipe. [0003] There are two major problems in the production process of the above-mentioned molding process and equipment: [0004] 1. During the process of injecting water into the U-shaped pipe, due to the high water pressure in the U-shaped pipe, it often causes the main piston rod to ...

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Problems solved by technology

[0004] 1. During the process of injecting water into the U-shaped pipe, due to the high water pressure in the U-shaped pipe, it often causes the main piston rod to retreat. The retreat of the main piston rod will cause insufficient water pressure in the U-shaped pipe, and at the same time, the water in the U-shaped pipe will It will also leak out, which will affect the quality of the formation of the tee pipe when the subsequent main piston rod is advanced twice, resulting in waste products

[0005] 2. When the main piston rod is propelled for the second time, the material on the outer wall of the U-shaped pipe is rolled into the mold cavity of the main pipe of the three-way pipe, but due to the high water pressure inside the U-shaped pipe, the strong water pressure will cause the material to be pressed into the three-way pipe. The inner and outer walls of the mold cavity of the main pipe are broken by hydraulic pressure, which reduces the yield

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