Molding technology of bending connection pipe

Abstract

The invention discloses a molding technology of a bending connection pipe; the bending connection pipe is manufactured by molding a bendable branch pipe mandril; after being molded in a way of vulcanization, the branch pipe mandril can be easily and conveniently pulled out from the bending connection pipe, so that the bending connection pipe can be manufactured into any needed size. According to the molding technology of the bending connection pipe, a connecting rubber die cavity is arranged at the connecting part of a main pipe and a branch pipe, and a vulcanized rubber material in the connecting rubber die cavity is used for closely wrapping the connecting part of the main pipe and the branch pipe, so that the integral bending connection pipe can be manufactured, the sealing property of the bending connection pipe is effectively improved, and the service life of the bending connection pipe is effectively prolonged.

Description

technical field [0001] The invention relates to a rubber hose forming process, in particular to a bending connecting pipe forming process. Background technique [0002] According to whether the tube core is used or not, the hose forming method can be divided into core method (including soft core method and hard core method) and coreless method. The hard core method is to use a metal or hard plastic mandrel for molding, that is, the tube blank produced by extrusion is placed on the mandrel for molding. The hard core method is characterized by accurate and smooth inner diameter of the molded hose, and good adhesion between the rubber layer and the reinforcing layer. But the length of the rubber hose that can be molded is shorter, and there are difficulties when making the bend, and the mandrel is more difficult to pull out from the rubber hose. [0003] In some special cases, it is necessary to insert the branch pipe into the main pipe and connect it. It is difficult to form...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology and provide a curved connecting pipe forming process, which solves the problem that the rubber tube forming process in the current technology is difficult to make curved connecting pipes, and the mandrel is not easy to form from the bent pipe. The problem of pulling out the hose

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